ue,rrc_nr: Add dummy handler for RRC Release to avoid logging an unhandled message error

srsue/hdr/stack/rrc_nr/rrc_nr.h

@@ -148,6 +148,7 @@ private:
   void handle_rrc_reconfig(const asn1::rrc_nr::rrc_recfg_s& reconfig);
   void handle_dl_info_transfer(const asn1::rrc_nr::dl_info_transfer_s& dl_info_transfer);
   void handle_security_mode_command(const asn1::rrc_nr::security_mode_cmd_s& smc);
+  void handle_rrc_release(const asn1::rrc_nr::rrc_release_s& rrc_release);
   void generate_as_keys();
 
   srsran::task_sched_handle task_sched;
@@ -184,7 +185,7 @@ private:
   uint32_t                            sim_measurement_carrier_freq_r15;
   srsran::timer_handler::unique_timer sim_measurement_timer;
 
-  rrc_nr_state_t     state = RRC_NR_STATE_IDLE;
+  rrc_nr_state_t state = RRC_NR_STATE_IDLE;
 
   uint8_t transaction_id = 0;
 
@@ -251,9 +252,9 @@ private:
   class setup_request_proc;
 
   srsran::proc_t<cell_selection_proc, rrc_cell_search_result_t> cell_selector;
-  srsran::proc_t<connection_setup_proc>                     conn_setup_proc;
-  srsran::proc_t<connection_reconf_no_ho_proc>              conn_recfg_proc;
-  srsran::proc_t<setup_request_proc>                        setup_req_proc;
+  srsran::proc_t<connection_setup_proc>                         conn_setup_proc;
+  srsran::proc_t<connection_reconf_no_ho_proc>                  conn_recfg_proc;
+  srsran::proc_t<setup_request_proc>                            setup_req_proc;
 
   srsran::proc_manager_list_t callback_list;
 };

srsue/src/stack/rrc_nr/rrc_nr.cc

@@ -311,6 +311,11 @@ void rrc_nr::decode_dl_dcch(uint32_t lcid, unique_byte_buffer_t pdu)
       task_sched.defer_task([this, smc]() { handle_security_mode_command(smc); });
       break;
     }
+    case dl_dcch_msg_type_c::c1_c_::types::rrc_release: {
+      rrc_release_s rrc_release = c1->rrc_release();
+      task_sched.defer_task([this, rrc_release]() { handle_rrc_release(rrc_release); });
+      break;
+    }
     default:
       logger.error("The provided DL-DCCH message type is not recognized or supported");
       break;
@@ -350,7 +355,7 @@ void rrc_nr::handle_sib1(const sib1_s& sib1)
   logger.info("SIB1 received, CellID=%d", meas_cells.serving_cell().get_cell_id() & 0xfff);
 
   meas_cells.serving_cell().set_sib1(sib1);
-  
+
   // TODO: config basic config and remove early exit
   return;
 
@@ -2117,6 +2122,11 @@ void rrc_nr::handle_security_mode_command(const asn1::rrc_nr::security_mode_cmd_
   pdcp->enable_encryption(lcid, DIRECTION_TXRX);
 }
 
+void rrc_nr::handle_rrc_release(const asn1::rrc_nr::rrc_release_s& rrc_release)
+{
+  logger.info("RRC Release not handled yet");
+}
+
 // Security helper used by Security Mode Command and Mobility handling routines
 void rrc_nr::generate_as_keys()
 {