s1ap_eNB_encoder.c

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/*! \file s1ap_eNB_encoder.c
 * \brief s1ap pdu encode procedures for eNB
 * \author Sebastien ROUX <sebastien.roux@eurecom.fr>
 * \date 2013
 * \version 0.1
 */

#include <stdio.h>
#include <string.h>

#include "s1ap_common.h"
#include "s1ap_ies_defs.h"
#include "s1ap_eNB_encoder.h"

#include "assertions.h"
#include "conversions.h"

static inline int s1ap_eNB_encode_initiating(s1ap_message *message,
        uint8_t **buffer,
        uint32_t *len);
static inline int s1ap_eNB_encode_successfull_outcome(s1ap_message *message,
        uint8_t **buffer, uint32_t *len);
static inline int s1ap_eNB_encode_unsuccessfull_outcome(s1ap_message *message,
        uint8_t **buffer, uint32_t *len);
static inline int s1ap_eNB_encode_s1_setup_request(S1SetupRequestIEs_t
        *s1SetupRequestIEs, uint8_t **buffer, uint32_t *length);
static inline int s1ap_eNB_encode_trace_failure(TraceFailureIndicationIEs_t
        *trace_failure_ies_p, uint8_t **buffer,
        uint32_t *length);
static inline int s1ap_eNB_encode_initial_ue_message(InitialUEMessageIEs_t
        *initialUEmessageIEs_p, uint8_t **buffer,
        uint32_t *length);
static inline int s1ap_eNB_encode_uplink_nas_transport(UplinkNASTransportIEs_t
        *uplinkNASTransportIEs,
        uint8_t **buffer,
        uint32_t *length);
static inline int s1ap_eNB_encode_ue_capability_info_indication(
    UECapabilityInfoIndicationIEs_t *ueCapabilityInfoIndicationIEs,
    uint8_t **buffer,
    uint32_t *length);
static inline int s1ap_eNB_encode_initial_context_setup_response(
    InitialContextSetupResponseIEs_t *initialContextSetupResponseIEs,
    uint8_t **buffer,
    uint32_t *length);

int s1ap_eNB_encode_pdu(s1ap_message *message, uint8_t **buffer, uint32_t *len)
{
    DevAssert(message != NULL);
    DevAssert(buffer != NULL);
    DevAssert(len != NULL);

    switch(message->direction) {
        case S1AP_PDU_PR_initiatingMessage:
            return s1ap_eNB_encode_initiating(message, buffer, len);
        case S1AP_PDU_PR_successfulOutcome:
            return s1ap_eNB_encode_successfull_outcome(message, buffer, len);
        case S1AP_PDU_PR_unsuccessfulOutcome:
            return s1ap_eNB_encode_unsuccessfull_outcome(message, buffer, len);
        default:
            S1AP_DEBUG("Unknown message outcome (%d) or not implemented",
                       (int)message->direction);
            break;
    }
    return -1;
}

static inline
int s1ap_eNB_encode_initiating(s1ap_message *message,
        uint8_t **buffer,
        uint32_t *len)
{
    switch(message->procedureCode) {
        case ProcedureCode_id_S1Setup:
            return s1ap_eNB_encode_s1_setup_request(&message->msg.s1SetupRequestIEs,
                                                    buffer, len);
        case ProcedureCode_id_uplinkNASTransport:
            return s1ap_eNB_encode_uplink_nas_transport(&message->msg.uplinkNASTransportIEs,
                    buffer, len);
        case ProcedureCode_id_UECapabilityInfoIndication:
            return s1ap_eNB_encode_ue_capability_info_indication(
                       &message->msg.ueCapabilityInfoIndicationIEs,
                       buffer, len);
        case ProcedureCode_id_initialUEMessage:
            return s1ap_eNB_encode_initial_ue_message(
                &message->msg.initialUEMessageIEs,
                buffer, len);
        default:
            S1AP_DEBUG("Unknown procedure ID (%d) for initiating message\n",
                       (int)message->procedureCode);
            break;
    }
    return -1;
}

static inline
int s1ap_eNB_encode_successfull_outcome(s1ap_message *message,
    uint8_t **buffer, uint32_t *len)
{
    switch(message->procedureCode) {
        case ProcedureCode_id_InitialContextSetup:
            return s1ap_eNB_encode_initial_context_setup_response(
                       &message->msg.initialContextSetupResponseIEs,
                       buffer, len);
        default:
            S1AP_DEBUG("Unknown procedure ID (%d) for successfull outcome message\n",
                       (int)message->procedureCode);
            break;
    }
    return -1;
}

static inline
int s1ap_eNB_encode_unsuccessfull_outcome(s1ap_message *message,
    uint8_t **buffer, uint32_t *len)
{
    switch(message->procedureCode) {
        default:
            S1AP_DEBUG("Unknown procedure ID (%d) for unsuccessfull outcome message\n",
                       (int)message->procedureCode);
            break;
    }
    return -1;
}

static inline
int s1ap_eNB_encode_ue_capability_info_indication(
    UECapabilityInfoIndicationIEs_t *ueCapabilityInfoIndicationIEs,
    uint8_t             **buffer,
    uint32_t             *length)
{
    UECapabilityInfoIndication_t  ueCapabilityInfoIndication;
    UECapabilityInfoIndication_t *ueCapabilityInfoIndication_p =
        &ueCapabilityInfoIndication;

    memset((void *)ueCapabilityInfoIndication_p, 0,
           sizeof(UECapabilityInfoIndication_t));

    if (s1ap_encode_uecapabilityinfoindicationies(ueCapabilityInfoIndication_p,
            ueCapabilityInfoIndicationIEs) < 0) {
        return -1;
    }

    return s1ap_generate_initiating_message(buffer,
                                            length,
                                            ProcedureCode_id_UECapabilityInfoIndication,
                                            Criticality_ignore,
                                            &asn_DEF_UECapabilityInfoIndication,
                                            ueCapabilityInfoIndication_p);
}

static inline
int s1ap_eNB_encode_uplink_nas_transport(UplinkNASTransportIEs_t
        *uplinkNASTransportIEs,
        uint8_t             **buffer,
        uint32_t             *length)
{
    UplinkNASTransport_t  uplinkNASTransport;
    UplinkNASTransport_t *uplinkNASTransport_p = &uplinkNASTransport;

    memset((void *)uplinkNASTransport_p, 0, sizeof(UplinkNASTransport_t));

    if (s1ap_encode_uplinknastransporties(uplinkNASTransport_p,
                                          uplinkNASTransportIEs) < 0) {
        return -1;
    }

    return s1ap_generate_initiating_message(buffer,
                                            length,
                                            ProcedureCode_id_uplinkNASTransport,
                                            Criticality_ignore,
                                            &asn_DEF_UplinkNASTransport,
                                            uplinkNASTransport_p);
}

static inline
int s1ap_eNB_encode_s1_setup_request(S1SetupRequestIEs_t
        *s1SetupRequestIEs,
        uint8_t             **buffer,
        uint32_t             *length)
{
    S1SetupRequest_t  s1SetupRequest;
    S1SetupRequest_t *s1SetupRequest_p = &s1SetupRequest;

    memset((void *)s1SetupRequest_p, 0, sizeof(S1SetupRequest_t));

    if (s1ap_encode_s1setuprequesties(s1SetupRequest_p, s1SetupRequestIEs) < 0) {
        return -1;
    }

    return s1ap_generate_initiating_message(buffer,
                                            length,
                                            ProcedureCode_id_S1Setup,
                                            Criticality_reject,
                                            &asn_DEF_S1SetupRequest,
                                            s1SetupRequest_p);
}

static inline
int s1ap_eNB_encode_initial_ue_message(InitialUEMessageIEs_t
        *initialUEmessageIEs_p,
        uint8_t             **buffer,
        uint32_t             *length)
{
    InitialUEMessage_t  initialUEMessage;
    InitialUEMessage_t *initialUEMessage_p = &initialUEMessage;

    memset((void *)initialUEMessage_p, 0, sizeof(InitialUEMessage_t));

    if (s1ap_encode_initialuemessageies(initialUEMessage_p,
                                        initialUEmessageIEs_p) < 0) {
        return -1;
    }

    return s1ap_generate_initiating_message(buffer,
                                            length,
                                            ProcedureCode_id_initialUEMessage,
                                            Criticality_reject,
                                            &asn_DEF_InitialUEMessage,
                                            initialUEMessage_p);
}

static inline
int s1ap_eNB_encode_trace_failure(TraceFailureIndicationIEs_t
        *trace_failure_ies_p,
        uint8_t                    **buffer,
        uint32_t                    *length)
{
    TraceFailureIndication_t  trace_failure;
    TraceFailureIndication_t *trace_failure_p = &trace_failure;

    memset((void *)trace_failure_p, 0, sizeof(TraceFailureIndication_t));

    if (s1ap_encode_tracefailureindicationies(trace_failure_p,
            trace_failure_ies_p) < 0) {
        return -1;
    }

    return s1ap_generate_initiating_message(buffer,
                                            length,
                                            ProcedureCode_id_TraceFailureIndication,
                                            Criticality_reject,
                                            &asn_DEF_TraceFailureIndication,
                                            trace_failure_p);
}

static inline
int s1ap_eNB_encode_initial_context_setup_response(
    InitialContextSetupResponseIEs_t *initialContextSetupResponseIEs,
    uint8_t             **buffer,
    uint32_t             *length)
{
    InitialContextSetupResponse_t  initial_context_setup_response;
    InitialContextSetupResponse_t *initial_context_setup_response_p =
        &initial_context_setup_response;

    memset((void *)initial_context_setup_response_p, 0,
           sizeof(InitialContextSetupResponse_t));

    if (s1ap_encode_initialcontextsetupresponseies(initial_context_setup_response_p,
            initialContextSetupResponseIEs) < 0) {
        return -1;
    }

    return s1ap_generate_successfull_outcome(buffer,
            length,
            ProcedureCode_id_InitialContextSetup,
            Criticality_reject,
            &asn_DEF_InitialContextSetupResponse,
            initial_context_setup_response_p);
}