cu_cp: remove unused interface

Author: FabianEckermann

lib/cu_cp/du_processor/du_processor.h

@@ -218,15 +218,6 @@ class du_processor_mobility_handler
   /// \brief Retrieve the SIB1 for a given PCI of a DU.
   virtual byte_buffer get_packed_sib1(nr_cell_global_id_t cgi) = 0;
 };
-/// Handler for an NGAP entity to communicate with the DU processor
-class du_processor_ngap_interface
-{
-public:
-  virtual ~du_processor_ngap_interface() = default;
-
-  /// \brief Allocate a new UE index.
-  virtual ue_index_t allocate_new_ue_index() = 0;
-};
 
 /// Interface to notify the F1AP about control messages.
 class du_processor_f1ap_control_notifier
@@ -321,7 +312,6 @@ class du_processor : public du_processor_cell_info_interface
   virtual ~du_processor() = default;
 
   virtual du_processor_f1ap_interface&     get_f1ap_interface()     = 0;
-  virtual du_processor_ngap_interface&     get_ngap_interface()     = 0;
   virtual du_processor_paging_handler&     get_paging_handler()     = 0;
   virtual du_processor_statistics_handler& get_statistics_handler() = 0;
   virtual du_processor_mobility_handler&   get_mobility_handler()   = 0;

lib/cu_cp/du_processor/du_processor_impl.cpp

@@ -110,11 +110,6 @@ du_setup_result du_processor_impl::handle_du_setup_request(const du_setup_reques
   return res;
 }
 
-ue_index_t du_processor_impl::allocate_new_ue_index()
-{
-  return ue_mng.add_ue(cfg.du_index);
-}
-
 bool du_processor_impl::create_rrc_ue(cu_cp_ue&                              ue,
                                       rnti_t                                 c_rnti,
                                       const nr_cell_global_id_t&             cgi,

lib/cu_cp/du_processor/du_processor_impl.h

@@ -31,7 +31,6 @@ class du_processor_impl : public du_processor,
                           public du_setup_handler,
                           public du_metrics_handler,
                           public du_processor_f1ap_interface,
-                          public du_processor_ngap_interface,
                           public du_processor_paging_handler,
                           public du_processor_statistics_handler,
                           public du_processor_mobility_handler
@@ -61,7 +60,6 @@ class du_processor_impl : public du_processor,
 
   // du_processor_f1ap_interface
   du_setup_result handle_du_setup_request(const du_setup_request& req) override;
-  ue_index_t      allocate_new_ue_index() override;
   ue_rrc_context_creation_outcome
        handle_ue_rrc_context_creation_request(const ue_rrc_context_creation_request& req) override;
   void handle_du_initiated_ue_context_release_request(const f1ap_ue_context_release_request& request) override;
@@ -81,7 +79,6 @@ class du_processor_impl : public du_processor,
   metrics_report::du_info handle_du_metrics_report_request() const override;
 
   du_processor_f1ap_interface&           get_f1ap_interface() override { return *this; }
-  du_processor_ngap_interface&           get_ngap_interface() override { return *this; }
   du_processor_paging_handler&           get_paging_handler() override { return *this; }
   du_processor_statistics_handler&       get_statistics_handler() override { return *this; }
   du_processor_mobility_handler&         get_mobility_handler() override { return *this; }

lib/cu_cp/du_processor/du_processor_repository.cpp

@@ -140,7 +140,7 @@ ue_index_t du_processor_repository::handle_ue_index_allocation_request(const nr_
 {
   for (auto& du : du_db) {
     if (du.second.processor->has_cell(cgi)) {
-      return du.second.processor->get_ngap_interface().allocate_new_ue_index();
+      return cfg.ue_mng.add_ue(du.first);
     }
   }
   logger.debug("No DU with plmn={} and cell_id={} found.", cgi.plmn_id, cgi.nci);