Bearer context release decoder and encoder

openair2/COMMON/e1ap_messages_types.h

@@ -152,8 +152,8 @@ typedef struct pdu_session_to_setup_s {
 } pdu_session_to_setup_t;
 
 typedef struct e1ap_bearer_setup_req_s {
-  uint64_t gNB_cu_cp_ue_id;
-  uint64_t gNB_cu_up_ue_id;
+  uint32_t gNB_cu_cp_ue_id;
+  uint32_t gNB_cu_up_ue_id;
   rnti_t   rnti;
   uint64_t cipheringAlgorithm;
   uint64_t integrityProtectionAlgorithm;
@@ -170,6 +170,13 @@ typedef struct e1ap_bearer_setup_req_s {
   pdu_session_to_setup_t pduSessionMod[E1AP_MAX_NUM_PDU_SESSIONS];
 } e1ap_bearer_setup_req_t;
 
+typedef struct e1ap_bearer_release_cmd_s {
+  uint32_t gNB_cu_cp_ue_id;
+  uint32_t gNB_cu_up_ue_id;
+  long cause_type;
+  long cause;
+} e1ap_bearer_release_cmd_t;
+
 typedef struct drb_setup_s {
   int drbId;
   in_addr_t tlAddress;

openair2/E1AP/e1ap.h

@@ -54,6 +54,14 @@ int e1apCUUP_handle_BEARER_CONTEXT_MODIFICATION_REQUEST(instance_t instance,
 void e1apCUUP_send_BEARER_CONTEXT_SETUP_RESPONSE(instance_t instance,
                                                  e1ap_bearer_setup_resp_t *const resp);
 
+int e1apCUUP_handle_BEARER_CONTEXT_RELEASE_COMMAND(instance_t instance,
+                                                   const E1AP_E1AP_PDU_t *pdu);
+
+int e1apCUCP_handle_BEARER_CONTEXT_RELEASE_COMPLETE(instance_t instance,
+                                                    const E1AP_E1AP_PDU_t *pdu);
+
+int e1apCUUP_send_BEARER_CONTEXT_RELEASE_COMPLETE(instance_t instance, e1ap_bearer_release_cmd_t *const cmd);
+
 void *E1AP_CUUP_task(void *arg);
 
 void *E1AP_CUCP_task(void *arg);

openair2/E1AP/e1ap_api.c

@@ -199,3 +199,12 @@ void CUUP_process_bearer_context_mod_req(e1ap_bearer_setup_req_t *const req, ins
   // TODO: send bearer cxt mod response
 }
 
+void CUUP_process_bearer_release_command(e1ap_bearer_release_cmd_t *const cmd, instance_t instance) {
+  instance_t gtpInst = getCxtE1(UPtype, instance)->gtpInstN3;
+  newGtpuDeleteAllTunnels(gtpInst, cmd->gNB_cu_up_ue_id);
+  gtpInst = getCxtE1(UPtype, instance)->gtpInstF1U;
+  newGtpuDeleteAllTunnels(gtpInst, cmd->gNB_cu_up_ue_id);
+
+  e1apCUUP_send_BEARER_CONTEXT_RELEASE_COMPLETE(instance, cmd);
+}
+

openair2/E1AP/e1ap_api.h

@@ -31,4 +31,5 @@ void CUUP_process_e1_bearer_context_setup_req(e1ap_bearer_setup_req_t *const req
 
 void CUUP_process_bearer_context_mod_req(e1ap_bearer_setup_req_t *const req, instance_t instance);
 
+void CUUP_process_bearer_release_command(e1ap_bearer_release_cmd_t *const cmd, instance_t instance);
 #endif