/*
* Licensed to the OpenAirInterface (OAI) Software Alliance under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The OpenAirInterface Software Alliance licenses this file to You under
* the OAI Public License, Version 1.1 (the "License"); you may not use this file
* except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.openairinterface.org/?page_id=698
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*-------------------------------------------------------------------------------
* For more information about the OpenAirInterface (OAI) Software Alliance:
* contact@openairinterface.org
*/
/*! \file s1ap_eNB_nas_procedures.c
* \brief S1AP eNb NAS procedure handler
* \author S. Roux and Navid Nikaein
* \date 2010 - 2015
* \email: navid.nikaein@eurecom.fr
* \version 1.0
* @ingroup _s1ap
*/
#include <stdio.h>
#include <stdlib.h>
#include <stdint.h>
#include "assertions.h"
#include "conversions.h"
#include "intertask_interface.h"
#include "s1ap_common.h"
#include "s1ap_eNB_defs.h"
#include "s1ap_eNB_itti_messaging.h"
#include "s1ap_eNB_encoder.h"
#include "s1ap_eNB_nnsf.h"
#include "s1ap_eNB_ue_context.h"
#include "s1ap_eNB_nas_procedures.h"
#include "s1ap_eNB_management_procedures.h"
#include "msc.h"
//------------------------------------------------------------------------------
int s1ap_eNB_handle_nas_first_req(
instance_t instance, s1ap_nas_first_req_t *s1ap_nas_first_req_p)
//------------------------------------------------------------------------------
{
s1ap_eNB_instance_t *instance_p = NULL;
struct s1ap_eNB_mme_data_s *mme_desc_p = NULL;
struct s1ap_eNB_ue_context_s *ue_desc_p = NULL;
S1AP_S1AP_PDU_t pdu;
S1AP_InitialUEMessage_t *out;
S1AP_InitialUEMessage_IEs_t *ie;
uint8_t *buffer = NULL;
uint32_t length = 0;
DevAssert(s1ap_nas_first_req_p != NULL);
/* Retrieve the S1AP eNB instance associated with Mod_id */
instance_p = s1ap_eNB_get_instance(instance);
DevAssert(instance_p != NULL);
memset(&pdu, 0, sizeof(pdu));
pdu.present = S1AP_S1AP_PDU_PR_initiatingMessage;
pdu.choice.initiatingMessage.procedureCode = S1AP_ProcedureCode_id_initialUEMessage;
pdu.choice.initiatingMessage.criticality = S1AP_Criticality_ignore;
pdu.choice.initiatingMessage.value.present = S1AP_InitiatingMessage__value_PR_InitialUEMessage;
out = &pdu.choice.initiatingMessage.value.choice.InitialUEMessage;
/* Select the MME corresponding to the provided GUMMEI. */
if (s1ap_nas_first_req_p->ue_identity.presenceMask & UE_IDENTITIES_gummei) {
mme_desc_p = s1ap_eNB_nnsf_select_mme_by_gummei(
instance_p,
s1ap_nas_first_req_p->establishment_cause,
s1ap_nas_first_req_p->ue_identity.gummei);
if (mme_desc_p) {
S1AP_INFO("[eNB %d] Chose MME '%s' (assoc_id %d) through GUMMEI MCC %d MNC %d MMEGI %d MMEC %d\n",
instance,
mme_desc_p->mme_name,
mme_desc_p->assoc_id,
s1ap_nas_first_req_p->ue_identity.gummei.mcc,
s1ap_nas_first_req_p->ue_identity.gummei.mnc,
s1ap_nas_first_req_p->ue_identity.gummei.mme_group_id,
s1ap_nas_first_req_p->ue_identity.gummei.mme_code);
}
}
if (mme_desc_p == NULL) {
/* Select the MME corresponding to the provided s-TMSI. */
if (s1ap_nas_first_req_p->ue_identity.presenceMask & UE_IDENTITIES_s_tmsi) {
mme_desc_p = s1ap_eNB_nnsf_select_mme_by_mme_code(
instance_p,
s1ap_nas_first_req_p->establishment_cause,
s1ap_nas_first_req_p->selected_plmn_identity,
s1ap_nas_first_req_p->ue_identity.s_tmsi.mme_code);
if (mme_desc_p) {
S1AP_INFO("[eNB %d] Chose MME '%s' (assoc_id %d) through S-TMSI MMEC %d and selected PLMN Identity index %d MCC %d MNC %d\n",
instance,
mme_desc_p->mme_name,
mme_desc_p->assoc_id,
s1ap_nas_first_req_p->ue_identity.s_tmsi.mme_code,
s1ap_nas_first_req_p->selected_plmn_identity,
instance_p->mcc[s1ap_nas_first_req_p->selected_plmn_identity],
instance_p->mnc[s1ap_nas_first_req_p->selected_plmn_identity]);
}
}
}
if (mme_desc_p == NULL) {
/* Select MME based on the selected PLMN identity, received through RRC
* Connection Setup Complete */
mme_desc_p = s1ap_eNB_nnsf_select_mme_by_plmn_id(
instance_p,
s1ap_nas_first_req_p->establishment_cause,
s1ap_nas_first_req_p->selected_plmn_identity);
if (mme_desc_p) {
S1AP_INFO("[eNB %d] Chose MME '%s' (assoc_id %d) through selected PLMN Identity index %d MCC %d MNC %d\n",
instance,
mme_desc_p->mme_name,
mme_desc_p->assoc_id,
s1ap_nas_first_req_p->selected_plmn_identity,
instance_p->mcc[s1ap_nas_first_req_p->selected_plmn_identity],
instance_p->mnc[s1ap_nas_first_req_p->selected_plmn_identity]);
}
}
if (mme_desc_p == NULL) {
/*
* If no MME corresponds to the GUMMEI, the s-TMSI, or the selected PLMN
* identity, selects the MME with the highest capacity.
*/
mme_desc_p = s1ap_eNB_nnsf_select_mme(
instance_p,
s1ap_nas_first_req_p->establishment_cause,
s1ap_nas_first_req_p->selected_plmn_identity);
if (mme_desc_p) {
S1AP_INFO("[eNB %d] Chose MME '%s' (assoc_id %d) through highest relative capacity\n",
instance,
mme_desc_p->mme_name,
mme_desc_p->assoc_id);
}
}
if (mme_desc_p == NULL) {
/*
* In case eNB has no MME associated, the eNB should inform RRC and discard
* this request.
*/
S1AP_WARN("No MME is associated to the eNB\n");
// TODO: Inform RRC
return -1;
}
/* The eNB should allocate a unique eNB UE S1AP ID for this UE. The value
* will be used for the duration of the connectivity.
*/
ue_desc_p = s1ap_eNB_allocate_new_UE_context();
DevAssert(ue_desc_p != NULL);
/* Keep a reference to the selected MME */
ue_desc_p->mme_ref = mme_desc_p;
ue_desc_p->ue_initial_id = s1ap_nas_first_req_p->ue_initial_id;
ue_desc_p->eNB_instance = instance_p;
ue_desc_p->selected_plmn_identity = s1ap_nas_first_req_p->selected_plmn_identity;
do {
struct s1ap_eNB_ue_context_s *collision_p;
/* Peek a random value for the eNB_ue_s1ap_id */
ue_desc_p->eNB_ue_s1ap_id = (random() + random()) & 0x00ffffff;
if ((collision_p = RB_INSERT(s1ap_ue_map, &instance_p->s1ap_ue_head, ue_desc_p))
== NULL) {
S1AP_DEBUG("Found usable eNB_ue_s1ap_id: 0x%06x %u(10)\n",
ue_desc_p->eNB_ue_s1ap_id,
ue_desc_p->eNB_ue_s1ap_id);
/* Break the loop as the id is not already used by another UE */
break;
}
} while(1);
/* mandatory */
ie = (S1AP_InitialUEMessage_IEs_t *)calloc(1, sizeof(S1AP_InitialUEMessage_IEs_t));
ie->id = S1AP_ProtocolIE_ID_id_eNB_UE_S1AP_ID;
ie->criticality = S1AP_Criticality_reject;
ie->value.present = S1AP_InitialUEMessage_IEs__value_PR_ENB_UE_S1AP_ID;
ie->value.choice.ENB_UE_S1AP_ID = ue_desc_p->eNB_ue_s1ap_id;
ASN_SEQUENCE_ADD(&out->protocolIEs.list, ie);
/* mandatory */
ie = (S1AP_InitialUEMessage_IEs_t *)calloc(1, sizeof(S1AP_InitialUEMessage_IEs_t));
ie->id = S1AP_ProtocolIE_ID_id_NAS_PDU;
ie->criticality = S1AP_Criticality_reject;
ie->value.present = S1AP_InitialUEMessage_IEs__value_PR_NAS_PDU;
#if 1
ie->value.choice.NAS_PDU.buf = s1ap_nas_first_req_p->nas_pdu.buffer;
#else
ie->value.choice.NAS_PDU.buf = malloc(s1ap_nas_first_req_p->nas_pdu.length);
memcpy(ie->value.choice.NAS_PDU.buf,
s1ap_nas_first_req_p->nas_pdu.buffer,
s1ap_nas_first_req_p->nas_pdu.length);
#endif
ie->value.choice.NAS_PDU.size = s1ap_nas_first_req_p->nas_pdu.length;
ASN_SEQUENCE_ADD(&out->protocolIEs.list, ie);
/* mandatory */
ie = (S1AP_InitialUEMessage_IEs_t *)calloc(1, sizeof(S1AP_InitialUEMessage_IEs_t));
ie->id = S1AP_ProtocolIE_ID_id_TAI;
ie->criticality = S1AP_Criticality_reject;
ie->value.present = S1AP_InitialUEMessage_IEs__value_PR_TAI;
/* Assuming TAI is the TAI from the cell */
INT16_TO_OCTET_STRING(instance_p->tac, &ie->value.choice.TAI.tAC);
MCC_MNC_TO_PLMNID(instance_p->mcc[ue_desc_p->selected_plmn_identity],
instance_p->mnc[ue_desc_p->selected_plmn_identity],
instance_p->mnc_digit_length[ue_desc_p->selected_plmn_identity],
&ie->value.choice.TAI.pLMNidentity);
ASN_SEQUENCE_ADD(&out->protocolIEs.list, ie);
/* mandatory */
ie = (S1AP_InitialUEMessage_IEs_t *)calloc(1, sizeof(S1AP_InitialUEMessage_IEs_t));
ie->id = S1AP_ProtocolIE_ID_id_EUTRAN_CGI;
ie->criticality = S1AP_Criticality_ignore;
ie->value.present = S1AP_InitialUEMessage_IEs__value_PR_EUTRAN_CGI;
/* Set the EUTRAN CGI
* The cell identity is defined on 28 bits but as we use macro enb id,
* we have to pad.
*/
//#warning "TODO get cell id from RRC"
MACRO_ENB_ID_TO_CELL_IDENTITY(instance_p->eNB_id,
0, // Cell ID
&ie->value.choice.EUTRAN_CGI.cell_ID);
MCC_MNC_TO_TBCD(instance_p->mcc[mme_desc_p->broadcast_plmn_index[0]],
instance_p->mnc[mme_desc_p->broadcast_plmn_index[0]],
instance_p->mnc_digit_length[mme_desc_p->broadcast_plmn_index[0]],
&ie->value.choice.EUTRAN_CGI.pLMNidentity);
ASN_SEQUENCE_ADD(&out->protocolIEs.list, ie);
/* Set the establishment cause according to those provided by RRC */
DevCheck(s1ap_nas_first_req_p->establishment_cause < RRC_CAUSE_LAST,
s1ap_nas_first_req_p->establishment_cause, RRC_CAUSE_LAST, 0);
/* mandatory */
ie = (S1AP_InitialUEMessage_IEs_t *)calloc(1, sizeof(S1AP_InitialUEMessage_IEs_t));
ie->id = S1AP_ProtocolIE_ID_id_RRC_Establishment_Cause;
ie->criticality = S1AP_Criticality_ignore;
ie->value.present = S1AP_InitialUEMessage_IEs__value_PR_RRC_Establishment_Cause;
ie->value.choice.RRC_Establishment_Cause = s1ap_nas_first_req_p->establishment_cause;
ASN_SEQUENCE_ADD(&out->protocolIEs.list, ie);
/* optional */
if (s1ap_nas_first_req_p->ue_identity.presenceMask & UE_IDENTITIES_s_tmsi) {
S1AP_DEBUG("S_TMSI_PRESENT\n");
ie = (S1AP_InitialUEMessage_IEs_t *)calloc(1, sizeof(S1AP_InitialUEMessage_IEs_t));
ie->id = S1AP_ProtocolIE_ID_id_S_TMSI;
ie->criticality = S1AP_Criticality_reject;
ie->value.present = S1AP_InitialUEMessage_IEs__value_PR_S_TMSI;
MME_CODE_TO_OCTET_STRING(s1ap_nas_first_req_p->ue_identity.s_tmsi.mme_code,
&ie->value.choice.S_TMSI.mMEC);
M_TMSI_TO_OCTET_STRING(s1ap_nas_first_req_p->ue_identity.s_tmsi.m_tmsi,
&ie->value.choice.S_TMSI.m_TMSI);
ASN_SEQUENCE_ADD(&out->protocolIEs.list, ie);
}
/* optional */
if (s1ap_nas_first_req_p->ue_identity.presenceMask & UE_IDENTITIES_gummei) {
S1AP_DEBUG("GUMMEI_ID_PRESENT\n");
ie = (S1AP_InitialUEMessage_IEs_t *)calloc(1, sizeof(S1AP_InitialUEMessage_IEs_t));
ie->id = S1AP_ProtocolIE_ID_id_GUMMEI_ID;
ie->criticality = S1AP_Criticality_reject;
ie->value.present = S1AP_InitialUEMessage_IEs__value_PR_GUMMEI;
MCC_MNC_TO_PLMNID(
s1ap_nas_first_req_p->ue_identity.gummei.mcc,
s1ap_nas_first_req_p->ue_identity.gummei.mnc,
s1ap_nas_first_req_p->ue_identity.gummei.mnc_len,
&ie->value.choice.GUMMEI.pLMN_Identity);
MME_GID_TO_OCTET_STRING(s1ap_nas_first_req_p->ue_identity.gummei.mme_group_id,
&ie->value.choice.GUMMEI.mME_Group_ID);
MME_CODE_TO_OCTET_STRING(s1ap_nas_first_req_p->ue_identity.gummei.mme_code,
&ie->value.choice.GUMMEI.mME_Code);
ASN_SEQUENCE_ADD(&out->protocolIEs.list, ie);
}
if (s1ap_eNB_encode_pdu(&pdu, &buffer, &length) < 0) {
/* Failed to encode message */
DevMessage("Failed to encode initial UE message\n");
}
/* Update the current S1AP UE state */
ue_desc_p->ue_state = S1AP_UE_WAITING_CSR;
/* Assign a stream for this UE :
* From 3GPP 36.412 7)Transport layers:
* Within the SCTP association established between one MME and eNB pair:
* - a single pair of stream identifiers shall be reserved for the sole use
* of S1AP elementary procedures that utilize non UE-associated signalling.
* - At least one pair of stream identifiers shall be reserved for the sole use
* of S1AP elementary procedures that utilize UE-associated signallings.
* However a few pairs (i.e. more than one) should be reserved.
* - A single UE-associated signalling shall use one SCTP stream and
* the stream should not be changed during the communication of the
* UE-associated signalling.
*/
mme_desc_p->nextstream = (mme_desc_p->nextstream + 1) % mme_desc_p->out_streams;
if ((mme_desc_p->nextstream == 0) && (mme_desc_p->out_streams > 1)) {
mme_desc_p->nextstream += 1;
}
ue_desc_p->tx_stream = mme_desc_p->nextstream;
MSC_LOG_TX_MESSAGE(
MSC_S1AP_ENB,
MSC_S1AP_MME,
(const char *)NULL,
0,
MSC_AS_TIME_FMT" initialUEMessage initiatingMessage eNB_ue_s1ap_id %u",
0,0,//MSC_AS_TIME_ARGS(ctxt_pP),
ue_desc_p->eNB_ue_s1ap_id);
/* Send encoded message over sctp */
s1ap_eNB_itti_send_sctp_data_req(instance_p->instance, mme_desc_p->assoc_id,
buffer, length, ue_desc_p->tx_stream);
return 0;
}
//------------------------------------------------------------------------------
int s1ap_eNB_handle_nas_downlink(uint32_t assoc_id,
uint32_t stream,
S1AP_S1AP_PDU_t *pdu)
//------------------------------------------------------------------------------
{
s1ap_eNB_mme_data_t *mme_desc_p = NULL;
s1ap_eNB_ue_context_t *ue_desc_p = NULL;
s1ap_eNB_instance_t *s1ap_eNB_instance = NULL;
S1AP_DownlinkNASTransport_t *container;
S1AP_DownlinkNASTransport_IEs_t *ie;
S1AP_ENB_UE_S1AP_ID_t enb_ue_s1ap_id;
S1AP_MME_UE_S1AP_ID_t mme_ue_s1ap_id;
DevAssert(pdu != NULL);
/* UE-related procedure -> stream != 0 */
if (stream == 0) {
S1AP_ERROR("[SCTP %d] Received UE-related procedure on stream == 0\n",
assoc_id);
return -1;
}
if ((mme_desc_p = s1ap_eNB_get_MME(NULL, assoc_id, 0)) == NULL) {
S1AP_ERROR(
"[SCTP %d] Received NAS downlink message for non existing MME context\n",
assoc_id);
return -1;
}
s1ap_eNB_instance = mme_desc_p->s1ap_eNB_instance;
/* Prepare the S1AP message to encode */
container = &pdu->choice.initiatingMessage.value.choice.DownlinkNASTransport;
S1AP_FIND_PROTOCOLIE_BY_ID(S1AP_DownlinkNASTransport_IEs_t, ie, container,
S1AP_ProtocolIE_ID_id_MME_UE_S1AP_ID, true);
mme_ue_s1ap_id = ie->value.choice.MME_UE_S1AP_ID;
S1AP_FIND_PROTOCOLIE_BY_ID(S1AP_DownlinkNASTransport_IEs_t, ie, container,
S1AP_ProtocolIE_ID_id_eNB_UE_S1AP_ID, true);
enb_ue_s1ap_id = ie->value.choice.ENB_UE_S1AP_ID;
if ((ue_desc_p = s1ap_eNB_get_ue_context(s1ap_eNB_instance,
enb_ue_s1ap_id)) == NULL) {
MSC_LOG_RX_DISCARDED_MESSAGE(
MSC_S1AP_ENB,
MSC_S1AP_MME,
NULL,
0,
MSC_AS_TIME_FMT" downlinkNASTransport eNB_ue_s1ap_id %u mme_ue_s1ap_id %u",
enb_ue_s1ap_id,
mme_ue_s1ap_id);
S1AP_ERROR("[SCTP %d] Received NAS downlink message for non existing UE context eNB_UE_S1AP_ID: 0x%lx\n",
assoc_id,
enb_ue_s1ap_id);
return -1;
}
if (0 == ue_desc_p->rx_stream) {
ue_desc_p->rx_stream = stream;
} else if (stream != ue_desc_p->rx_stream) {
S1AP_ERROR("[SCTP %d] Received UE-related procedure on stream %u, expecting %u\n",
assoc_id, stream, ue_desc_p->rx_stream);
return -1;
}
/* Is it the first outcome of the MME for this UE ? If so store the mme
* UE s1ap id.
*/
if (ue_desc_p->mme_ue_s1ap_id == 0) {
ue_desc_p->mme_ue_s1ap_id = mme_ue_s1ap_id;
} else {
/* We already have a mme ue s1ap id check the received is the same */
if (ue_desc_p->mme_ue_s1ap_id != mme_ue_s1ap_id) {
S1AP_ERROR("[SCTP %d] Mismatch in MME UE S1AP ID (0x%lx != 0x%"PRIx32"\n",
assoc_id,
mme_ue_s1ap_id,
ue_desc_p->mme_ue_s1ap_id
);
return -1;
}
}
MSC_LOG_RX_MESSAGE(
MSC_S1AP_ENB,
MSC_S1AP_MME,
NULL,
0,
MSC_AS_TIME_FMT" downlinkNASTransport eNB_ue_s1ap_id %u mme_ue_s1ap_id %u",
assoc_id,
mme_ue_s1ap_id);
S1AP_FIND_PROTOCOLIE_BY_ID(S1AP_DownlinkNASTransport_IEs_t, ie, container,
S1AP_ProtocolIE_ID_id_NAS_PDU, true);
/* Forward the NAS PDU to RRC */
s1ap_eNB_itti_send_nas_downlink_ind(s1ap_eNB_instance->instance,
ue_desc_p->ue_initial_id,
ue_desc_p->eNB_ue_s1ap_id,
ie->value.choice.NAS_PDU.buf,
ie->value.choice.NAS_PDU.size);
return 0;
}
//------------------------------------------------------------------------------
int s1ap_eNB_nas_uplink(instance_t instance, s1ap_uplink_nas_t *s1ap_uplink_nas_p)
//------------------------------------------------------------------------------
{
struct s1ap_eNB_ue_context_s *ue_context_p;
s1ap_eNB_instance_t *s1ap_eNB_instance_p;
S1AP_S1AP_PDU_t pdu;
S1AP_UplinkNASTransport_t *out;
S1AP_UplinkNASTransport_IEs_t *ie;
uint8_t *buffer;
uint32_t length;
DevAssert(s1ap_uplink_nas_p != NULL);
/* Retrieve the S1AP eNB instance associated with Mod_id */
s1ap_eNB_instance_p = s1ap_eNB_get_instance(instance);
DevAssert(s1ap_eNB_instance_p != NULL);
if ((ue_context_p = s1ap_eNB_get_ue_context(s1ap_eNB_instance_p, s1ap_uplink_nas_p->eNB_ue_s1ap_id)) == NULL) {
/* The context for this eNB ue s1ap id doesn't exist in the map of eNB UEs */
S1AP_WARN("Failed to find ue context associated with eNB ue s1ap id: %06x\n",
s1ap_uplink_nas_p->eNB_ue_s1ap_id);
return -1;
}
/* Uplink NAS transport can occur either during an s1ap connected state
* or during initial attach (for example: NAS authentication).
*/
if (!(ue_context_p->ue_state == S1AP_UE_CONNECTED ||
ue_context_p->ue_state == S1AP_UE_WAITING_CSR)) {
S1AP_WARN("You are attempting to send NAS data over non-connected "
"eNB ue s1ap id: %u, current state: %d\n",
s1ap_uplink_nas_p->eNB_ue_s1ap_id, ue_context_p->ue_state);
return -1;
}
/* Prepare the S1AP message to encode */
memset(&pdu, 0, sizeof(pdu));
pdu.present = S1AP_S1AP_PDU_PR_initiatingMessage;
pdu.choice.initiatingMessage.procedureCode = S1AP_ProcedureCode_id_uplinkNASTransport;
pdu.choice.initiatingMessage.criticality = S1AP_Criticality_ignore;
pdu.choice.initiatingMessage.value.present = S1AP_InitiatingMessage__value_PR_UplinkNASTransport;
out = &pdu.choice.initiatingMessage.value.choice.UplinkNASTransport;
/* mandatory */
ie = (S1AP_UplinkNASTransport_IEs_t *)calloc(1, sizeof(S1AP_UplinkNASTransport_IEs_t));
ie->id = S1AP_ProtocolIE_ID_id_MME_UE_S1AP_ID;
ie->criticality = S1AP_Criticality_reject;
ie->value.present = S1AP_UplinkNASTransport_IEs__value_PR_MME_UE_S1AP_ID;
ie->value.choice.MME_UE_S1AP_ID = ue_context_p->mme_ue_s1ap_id;
ASN_SEQUENCE_ADD(&out->protocolIEs.list, ie);
/* mandatory */
ie = (S1AP_UplinkNASTransport_IEs_t *)calloc(1, sizeof(S1AP_UplinkNASTransport_IEs_t));
ie->id = S1AP_ProtocolIE_ID_id_eNB_UE_S1AP_ID;
ie->criticality = S1AP_Criticality_reject;
ie->value.present = S1AP_UplinkNASTransport_IEs__value_PR_ENB_UE_S1AP_ID;
ie->value.choice.ENB_UE_S1AP_ID = ue_context_p->eNB_ue_s1ap_id;
ASN_SEQUENCE_ADD(&out->protocolIEs.list, ie);
/* mandatory */
ie = (S1AP_UplinkNASTransport_IEs_t *)calloc(1, sizeof(S1AP_UplinkNASTransport_IEs_t));
ie->id = S1AP_ProtocolIE_ID_id_NAS_PDU;
ie->criticality = S1AP_Criticality_reject;
ie->value.present = S1AP_UplinkNASTransport_IEs__value_PR_NAS_PDU;
ie->value.choice.NAS_PDU.buf = s1ap_uplink_nas_p->nas_pdu.buffer;
ie->value.choice.NAS_PDU.size = s1ap_uplink_nas_p->nas_pdu.length;
ASN_SEQUENCE_ADD(&out->protocolIEs.list, ie);
/* mandatory */
ie = (S1AP_UplinkNASTransport_IEs_t *)calloc(1, sizeof(S1AP_UplinkNASTransport_IEs_t));
ie->id = S1AP_ProtocolIE_ID_id_EUTRAN_CGI;
ie->criticality = S1AP_Criticality_ignore;
ie->value.present = S1AP_UplinkNASTransport_IEs__value_PR_EUTRAN_CGI;
MCC_MNC_TO_PLMNID(
s1ap_eNB_instance_p->mcc[ue_context_p->mme_ref->broadcast_plmn_index[0]],
s1ap_eNB_instance_p->mnc[ue_context_p->mme_ref->broadcast_plmn_index[0]],
s1ap_eNB_instance_p->mnc_digit_length[ue_context_p->mme_ref->broadcast_plmn_index[0]],
&ie->value.choice.EUTRAN_CGI.pLMNidentity);
//#warning "TODO get cell id from RRC"
MACRO_ENB_ID_TO_CELL_IDENTITY(s1ap_eNB_instance_p->eNB_id,
0,
&ie->value.choice.EUTRAN_CGI.cell_ID);
ASN_SEQUENCE_ADD(&out->protocolIEs.list, ie);
/* mandatory */
ie = (S1AP_UplinkNASTransport_IEs_t *)calloc(1, sizeof(S1AP_UplinkNASTransport_IEs_t));
ie->id = S1AP_ProtocolIE_ID_id_TAI;
ie->criticality = S1AP_Criticality_ignore;
ie->value.present = S1AP_UplinkNASTransport_IEs__value_PR_TAI;
MCC_MNC_TO_PLMNID(
s1ap_eNB_instance_p->mcc[ue_context_p->selected_plmn_identity],
s1ap_eNB_instance_p->mnc[ue_context_p->selected_plmn_identity],
s1ap_eNB_instance_p->mnc_digit_length[ue_context_p->selected_plmn_identity],
&ie->value.choice.TAI.pLMNidentity);
TAC_TO_ASN1(s1ap_eNB_instance_p->tac, &ie->value.choice.TAI.tAC);
ASN_SEQUENCE_ADD(&out->protocolIEs.list, ie);
/* optional */
if (s1ap_eNB_encode_pdu(&pdu, &buffer, &length) < 0) {
S1AP_ERROR("Failed to encode uplink NAS transport\n");
/* Encode procedure has failed... */
return -1;
}
MSC_LOG_TX_MESSAGE(
MSC_S1AP_ENB,
MSC_S1AP_MME,
(const char *)NULL,
0,
MSC_AS_TIME_FMT" uplinkNASTransport initiatingMessage eNB_ue_s1ap_id %u mme_ue_s1ap_id %u",
0,0,//MSC_AS_TIME_ARGS(ctxt_pP),
ue_context_p->eNB_ue_s1ap_id,
ue_context_p->mme_ue_s1ap_id);
/* UE associated signalling -> use the allocated stream */
s1ap_eNB_itti_send_sctp_data_req(s1ap_eNB_instance_p->instance,
ue_context_p->mme_ref->assoc_id, buffer,
length, ue_context_p->tx_stream);
return 0;
}
//------------------------------------------------------------------------------
int s1ap_eNB_nas_non_delivery_ind(instance_t instance,
s1ap_nas_non_delivery_ind_t *s1ap_nas_non_delivery_ind)
//------------------------------------------------------------------------------
{
struct s1ap_eNB_ue_context_s *ue_context_p;
s1ap_eNB_instance_t *s1ap_eNB_instance_p;
S1AP_S1AP_PDU_t pdu;
S1AP_NASNonDeliveryIndication_t *out;
S1AP_NASNonDeliveryIndication_IEs_t *ie;
uint8_t *buffer;
uint32_t length;
DevAssert(s1ap_nas_non_delivery_ind != NULL);
/* Retrieve the S1AP eNB instance associated with Mod_id */
s1ap_eNB_instance_p = s1ap_eNB_get_instance(instance);
DevAssert(s1ap_eNB_instance_p != NULL);
if ((ue_context_p = s1ap_eNB_get_ue_context(s1ap_eNB_instance_p, s1ap_nas_non_delivery_ind->eNB_ue_s1ap_id)) == NULL) {
/* The context for this eNB ue s1ap id doesn't exist in the map of eNB UEs */
S1AP_WARN("Failed to find ue context associated with eNB ue s1ap id: %06x\n",
s1ap_nas_non_delivery_ind->eNB_ue_s1ap_id);
MSC_LOG_EVENT(
MSC_S1AP_ENB,
MSC_AS_TIME_FMT" Sent of NAS_NON_DELIVERY_IND to MME failed, no context for eNB_ue_s1ap_id %06x",
s1ap_nas_non_delivery_ind->eNB_ue_s1ap_id);
return -1;
}
/* Prepare the S1AP message to encode */
memset(&pdu, 0, sizeof(pdu));
pdu.present = S1AP_S1AP_PDU_PR_initiatingMessage;
pdu.choice.initiatingMessage.procedureCode = S1AP_ProcedureCode_id_NASNonDeliveryIndication;
pdu.choice.initiatingMessage.criticality = S1AP_Criticality_ignore;
pdu.choice.initiatingMessage.value.present = S1AP_InitiatingMessage__value_PR_NASNonDeliveryIndication;
out = &pdu.choice.initiatingMessage.value.choice.NASNonDeliveryIndication;
/* mandatory */
ie = (S1AP_NASNonDeliveryIndication_IEs_t *)calloc(1, sizeof(S1AP_NASNonDeliveryIndication_IEs_t));
ie->id = S1AP_ProtocolIE_ID_id_MME_UE_S1AP_ID;
ie->criticality = S1AP_Criticality_reject;
ie->value.present = S1AP_NASNonDeliveryIndication_IEs__value_PR_MME_UE_S1AP_ID;
ie->value.choice.MME_UE_S1AP_ID = ue_context_p->mme_ue_s1ap_id;
ASN_SEQUENCE_ADD(&out->protocolIEs.list, ie);
/* mandatory */
ie = (S1AP_NASNonDeliveryIndication_IEs_t *)calloc(1, sizeof(S1AP_NASNonDeliveryIndication_IEs_t));
ie->id = S1AP_ProtocolIE_ID_id_eNB_UE_S1AP_ID;
ie->criticality = S1AP_Criticality_reject;
ie->value.present = S1AP_NASNonDeliveryIndication_IEs__value_PR_ENB_UE_S1AP_ID;
ie->value.choice.ENB_UE_S1AP_ID = ue_context_p->eNB_ue_s1ap_id;
ASN_SEQUENCE_ADD(&out->protocolIEs.list, ie);
/* mandatory */
ie = (S1AP_NASNonDeliveryIndication_IEs_t *)calloc(1, sizeof(S1AP_NASNonDeliveryIndication_IEs_t));
ie->id = S1AP_ProtocolIE_ID_id_NAS_PDU;
ie->criticality = S1AP_Criticality_ignore;
ie->value.present = S1AP_NASNonDeliveryIndication_IEs__value_PR_NAS_PDU;
ie->value.choice.NAS_PDU.buf = s1ap_nas_non_delivery_ind->nas_pdu.buffer;
ie->value.choice.NAS_PDU.size = s1ap_nas_non_delivery_ind->nas_pdu.length;
ASN_SEQUENCE_ADD(&out->protocolIEs.list, ie);
/* mandatory */
ie = (S1AP_NASNonDeliveryIndication_IEs_t *)calloc(1, sizeof(S1AP_NASNonDeliveryIndication_IEs_t));
ie->id = S1AP_ProtocolIE_ID_id_Cause;
ie->criticality = S1AP_Criticality_ignore;
/* Send a dummy cause */
ie->value.present = S1AP_NASNonDeliveryIndication_IEs__value_PR_Cause;
ie->value.choice.Cause.present = S1AP_Cause_PR_radioNetwork;
ie->value.choice.Cause.choice.radioNetwork = S1AP_CauseRadioNetwork_radio_connection_with_ue_lost;
ASN_SEQUENCE_ADD(&out->protocolIEs.list, ie);
if (s1ap_eNB_encode_pdu(&pdu, &buffer, &length) < 0) {
S1AP_ERROR("Failed to encode NAS NON delivery indication\n");
/* Encode procedure has failed... */
MSC_LOG_EVENT(
MSC_S1AP_ENB,
MSC_AS_TIME_FMT" Sent of NAS_NON_DELIVERY_IND to MME failed (encoding)");
return -1;
}
MSC_LOG_TX_MESSAGE(
MSC_S1AP_ENB,
MSC_S1AP_MME,
(const char *)buffer,
length,
MSC_AS_TIME_FMT" NASNonDeliveryIndication initiatingMessage eNB_ue_s1ap_id %u mme_ue_s1ap_id %u",
0,0,//MSC_AS_TIME_ARGS(ctxt_pP),
ue_context_p->eNB_ue_s1ap_id,
ue_context_p->mme_ue_s1ap_id);
/* UE associated signalling -> use the allocated stream */
s1ap_eNB_itti_send_sctp_data_req(s1ap_eNB_instance_p->instance,
ue_context_p->mme_ref->assoc_id, buffer,
length, ue_context_p->tx_stream);
return 0;
}
//------------------------------------------------------------------------------
int s1ap_eNB_initial_ctxt_resp(
instance_t instance, s1ap_initial_context_setup_resp_t *initial_ctxt_resp_p)
//------------------------------------------------------------------------------
{
s1ap_eNB_instance_t *s1ap_eNB_instance_p = NULL;
struct s1ap_eNB_ue_context_s *ue_context_p = NULL;
S1AP_S1AP_PDU_t pdu;
S1AP_InitialContextSetupResponse_t *out;
S1AP_InitialContextSetupResponseIEs_t *ie;
uint8_t *buffer = NULL;
uint32_t length;
int i;
/* Retrieve the S1AP eNB instance associated with Mod_id */
s1ap_eNB_instance_p = s1ap_eNB_get_instance(instance);
DevAssert(initial_ctxt_resp_p != NULL);
DevAssert(s1ap_eNB_instance_p != NULL);
if ((ue_context_p = s1ap_eNB_get_ue_context(s1ap_eNB_instance_p,
initial_ctxt_resp_p->eNB_ue_s1ap_id)) == NULL) {
/* The context for this eNB ue s1ap id doesn't exist in the map of eNB UEs */
S1AP_WARN("Failed to find ue context associated with eNB ue s1ap id: 0x%06x\n",
initial_ctxt_resp_p->eNB_ue_s1ap_id);
return -1;
}
/* Uplink NAS transport can occur either during an s1ap connected state
* or during initial attach (for example: NAS authentication).
*/
if (!(ue_context_p->ue_state == S1AP_UE_CONNECTED ||
ue_context_p->ue_state == S1AP_UE_WAITING_CSR)) {
S1AP_WARN("You are attempting to send NAS data over non-connected "
"eNB ue s1ap id: %06x, current state: %d\n",
initial_ctxt_resp_p->eNB_ue_s1ap_id, ue_context_p->ue_state);
return -1;
}
/* Prepare the S1AP message to encode */
memset(&pdu, 0, sizeof(pdu));
pdu.present = S1AP_S1AP_PDU_PR_successfulOutcome;
pdu.choice.successfulOutcome.procedureCode = S1AP_ProcedureCode_id_InitialContextSetup;
pdu.choice.successfulOutcome.criticality = S1AP_Criticality_reject;
pdu.choice.successfulOutcome.value.present = S1AP_SuccessfulOutcome__value_PR_InitialContextSetupResponse;
out = &pdu.choice.successfulOutcome.value.choice.InitialContextSetupResponse;
/* mandatory */
ie = (S1AP_InitialContextSetupResponseIEs_t *)calloc(1, sizeof(S1AP_InitialContextSetupResponseIEs_t));
ie->id = S1AP_ProtocolIE_ID_id_MME_UE_S1AP_ID;
ie->criticality = S1AP_Criticality_ignore;
ie->value.present = S1AP_InitialContextSetupResponseIEs__value_PR_MME_UE_S1AP_ID;
ie->value.choice.MME_UE_S1AP_ID = ue_context_p->mme_ue_s1ap_id;
ASN_SEQUENCE_ADD(&out->protocolIEs.list, ie);
/* mandatory */
ie = (S1AP_InitialContextSetupResponseIEs_t *)calloc(1, sizeof(S1AP_InitialContextSetupResponseIEs_t));
ie->id = S1AP_ProtocolIE_ID_id_eNB_UE_S1AP_ID;
ie->criticality = S1AP_Criticality_ignore;
ie->value.present = S1AP_InitialContextSetupResponseIEs__value_PR_ENB_UE_S1AP_ID;
ie->value.choice.ENB_UE_S1AP_ID = initial_ctxt_resp_p->eNB_ue_s1ap_id;
ASN_SEQUENCE_ADD(&out->protocolIEs.list, ie);
/* mandatory */
ie = (S1AP_InitialContextSetupResponseIEs_t *)calloc(1, sizeof(S1AP_InitialContextSetupResponseIEs_t));
ie->id = S1AP_ProtocolIE_ID_id_E_RABSetupListCtxtSURes;
ie->criticality = S1AP_Criticality_ignore;
ie->value.present = S1AP_InitialContextSetupResponseIEs__value_PR_E_RABSetupListCtxtSURes;
for (i = 0; i < initial_ctxt_resp_p->nb_of_e_rabs; i++) {
S1AP_E_RABSetupItemCtxtSUResIEs_t *item;
/* mandatory */
item = (S1AP_E_RABSetupItemCtxtSUResIEs_t *)calloc(1, sizeof(S1AP_E_RABSetupItemCtxtSUResIEs_t));
item->id = S1AP_ProtocolIE_ID_id_E_RABSetupItemCtxtSURes;
item->criticality = S1AP_Criticality_ignore;
item->value.present = S1AP_E_RABSetupItemCtxtSUResIEs__value_PR_E_RABSetupItemCtxtSURes;
item->value.choice.E_RABSetupItemCtxtSURes.e_RAB_ID = initial_ctxt_resp_p->e_rabs[i].e_rab_id;
GTP_TEID_TO_ASN1(initial_ctxt_resp_p->e_rabs[i].gtp_teid, &item->value.choice.E_RABSetupItemCtxtSURes.gTP_TEID);
item->value.choice.E_RABSetupItemCtxtSURes.transportLayerAddress.buf = malloc(initial_ctxt_resp_p->e_rabs[i].eNB_addr.length);
memcpy(item->value.choice.E_RABSetupItemCtxtSURes.transportLayerAddress.buf,
initial_ctxt_resp_p->e_rabs[i].eNB_addr.buffer,
initial_ctxt_resp_p->e_rabs[i].eNB_addr.length);
item->value.choice.E_RABSetupItemCtxtSURes.transportLayerAddress.size = initial_ctxt_resp_p->e_rabs[i].eNB_addr.length;
item->value.choice.E_RABSetupItemCtxtSURes.transportLayerAddress.bits_unused = 0;
S1AP_DEBUG("initial_ctxt_resp_p: e_rab ID %ld, enb_addr %d.%d.%d.%d, SIZE %ld \n",
item->value.choice.E_RABSetupItemCtxtSURes.e_RAB_ID,
item->value.choice.E_RABSetupItemCtxtSURes.transportLayerAddress.buf[0],
item->value.choice.E_RABSetupItemCtxtSURes.transportLayerAddress.buf[1],
item->value.choice.E_RABSetupItemCtxtSURes.transportLayerAddress.buf[2],
item->value.choice.E_RABSetupItemCtxtSURes.transportLayerAddress.buf[3],
item->value.choice.E_RABSetupItemCtxtSURes.transportLayerAddress.size);
ASN_SEQUENCE_ADD(&ie->value.choice.E_RABSetupListCtxtSURes.list, item);
}
ASN_SEQUENCE_ADD(&out->protocolIEs.list, ie);
/* optional */
if (initial_ctxt_resp_p->nb_of_e_rabs_failed) {
ie = (S1AP_InitialContextSetupResponseIEs_t *)calloc(1, sizeof(S1AP_InitialContextSetupResponseIEs_t));
ie->id = S1AP_ProtocolIE_ID_id_E_RABFailedToSetupListCtxtSURes;
ie->criticality = S1AP_Criticality_ignore;
ie->value.present = S1AP_InitialContextSetupResponseIEs__value_PR_E_RABList;
for (i = 0; i < initial_ctxt_resp_p->nb_of_e_rabs_failed; i++) {
S1AP_E_RABItemIEs_t *item;
/* mandatory */
item = (S1AP_E_RABItemIEs_t *)calloc(1, sizeof(S1AP_E_RABItemIEs_t));
item->id = S1AP_ProtocolIE_ID_id_E_RABItem;
item->criticality = S1AP_Criticality_ignore;
item->value.present = S1AP_E_RABItemIEs__value_PR_E_RABItem;
item->value.choice.E_RABItem.e_RAB_ID = initial_ctxt_resp_p->e_rabs_failed[i].e_rab_id;
item->value.choice.E_RABItem.cause.present = initial_ctxt_resp_p->e_rabs_failed[i].cause;
switch(item->value.choice.E_RABItem.cause.present) {
case S1AP_Cause_PR_radioNetwork:
item->value.choice.E_RABItem.cause.choice.radioNetwork = initial_ctxt_resp_p->e_rabs_failed[i].cause_value;
break;
case S1AP_Cause_PR_transport:
item->value.choice.E_RABItem.cause.choice.transport = initial_ctxt_resp_p->e_rabs_failed[i].cause_value;
break;
case S1AP_Cause_PR_nas:
item->value.choice.E_RABItem.cause.choice.nas = initial_ctxt_resp_p->e_rabs_failed[i].cause_value;
break;
case S1AP_Cause_PR_protocol:
item->value.choice.E_RABItem.cause.choice.protocol = initial_ctxt_resp_p->e_rabs_failed[i].cause_value;
break;
case S1AP_Cause_PR_misc:
item->value.choice.E_RABItem.cause.choice.misc = initial_ctxt_resp_p->e_rabs_failed[i].cause_value;
break;
case S1AP_Cause_PR_NOTHING:
default:
break;
}
S1AP_DEBUG("initial context setup response: failed e_rab ID %ld\n", item->value.choice.E_RABItem.e_RAB_ID);
ASN_SEQUENCE_ADD(&ie->value.choice.E_RABList.list, item);
}
ASN_SEQUENCE_ADD(&out->protocolIEs.list, ie);
}
/* optional */
if (0) {
ie = (S1AP_InitialContextSetupResponseIEs_t *)calloc(1, sizeof(S1AP_InitialContextSetupResponseIEs_t));
ie->id = S1AP_ProtocolIE_ID_id_CriticalityDiagnostics;
ie->criticality = S1AP_Criticality_ignore;
ie->value.present = S1AP_InitialContextSetupResponseIEs__value_PR_CriticalityDiagnostics;
// ie->value.choice.CriticalityDiagnostics =;
ASN_SEQUENCE_ADD(&out->protocolIEs.list, ie);
}
if (s1ap_eNB_encode_pdu(&pdu, &buffer, &length) < 0) {
S1AP_ERROR("Failed to encode uplink NAS transport\n");
/* Encode procedure has failed... */
return -1;
}
MSC_LOG_TX_MESSAGE(
MSC_S1AP_ENB,
MSC_S1AP_MME,
(const char *)buffer,
length,
MSC_AS_TIME_FMT" InitialContextSetup successfulOutcome eNB_ue_s1ap_id %u mme_ue_s1ap_id %u",
0,0,//MSC_AS_TIME_ARGS(ctxt_pP),
initial_ctxt_resp_p->eNB_ue_s1ap_id,
ue_context_p->mme_ue_s1ap_id);
/* UE associated signalling -> use the allocated stream */
s1ap_eNB_itti_send_sctp_data_req(s1ap_eNB_instance_p->instance,
ue_context_p->mme_ref->assoc_id, buffer,
length, ue_context_p->tx_stream);
return 0;
}
//------------------------------------------------------------------------------
int s1ap_eNB_ue_capabilities(instance_t instance,
s1ap_ue_cap_info_ind_t *ue_cap_info_ind_p)
//------------------------------------------------------------------------------
{
s1ap_eNB_instance_t *s1ap_eNB_instance_p;
struct s1ap_eNB_ue_context_s *ue_context_p;
S1AP_S1AP_PDU_t pdu;
S1AP_UECapabilityInfoIndication_t *out;
S1AP_UECapabilityInfoIndicationIEs_t *ie;
uint8_t *buffer;
uint32_t length;
/* Retrieve the S1AP eNB instance associated with Mod_id */
s1ap_eNB_instance_p = s1ap_eNB_get_instance(instance);
DevAssert(ue_cap_info_ind_p != NULL);
DevAssert(s1ap_eNB_instance_p != NULL);
if ((ue_context_p = s1ap_eNB_get_ue_context(s1ap_eNB_instance_p,
ue_cap_info_ind_p->eNB_ue_s1ap_id)) == NULL) {
/* The context for this eNB ue s1ap id doesn't exist in the map of eNB UEs */
S1AP_WARN("Failed to find ue context associated with eNB ue s1ap id: %u\n",
ue_cap_info_ind_p->eNB_ue_s1ap_id);
return -1;
}
/* UE capabilities message can occur either during an s1ap connected state
* or during initial attach (for example: NAS authentication).
*/
if (!(ue_context_p->ue_state == S1AP_UE_CONNECTED ||
ue_context_p->ue_state == S1AP_UE_WAITING_CSR)) {
S1AP_WARN("You are attempting to send NAS data over non-connected "
"eNB ue s1ap id: %u, current state: %d\n",
ue_cap_info_ind_p->eNB_ue_s1ap_id, ue_context_p->ue_state);
return -1;
}
/* Prepare the S1AP message to encode */
memset(&pdu, 0, sizeof(pdu));
pdu.present = S1AP_S1AP_PDU_PR_initiatingMessage;
pdu.choice.initiatingMessage.procedureCode = S1AP_ProcedureCode_id_UECapabilityInfoIndication;
pdu.choice.initiatingMessage.criticality = S1AP_Criticality_ignore;
pdu.choice.initiatingMessage.value.present = S1AP_InitiatingMessage__value_PR_UECapabilityInfoIndication;
out = &pdu.choice.initiatingMessage.value.choice.UECapabilityInfoIndication;
/* mandatory */
ie = (S1AP_UECapabilityInfoIndicationIEs_t *)calloc(1, sizeof(S1AP_UECapabilityInfoIndicationIEs_t));
ie->id = S1AP_ProtocolIE_ID_id_MME_UE_S1AP_ID;
ie->criticality = S1AP_Criticality_reject;
ie->value.present = S1AP_UECapabilityInfoIndicationIEs__value_PR_MME_UE_S1AP_ID;
ie->value.choice.MME_UE_S1AP_ID = ue_context_p->mme_ue_s1ap_id;
ASN_SEQUENCE_ADD(&out->protocolIEs.list, ie);
/* mandatory */
ie = (S1AP_UECapabilityInfoIndicationIEs_t *)calloc(1, sizeof(S1AP_UECapabilityInfoIndicationIEs_t));
ie->id = S1AP_ProtocolIE_ID_id_eNB_UE_S1AP_ID;
ie->criticality = S1AP_Criticality_reject;
ie->value.present = S1AP_UECapabilityInfoIndicationIEs__value_PR_ENB_UE_S1AP_ID;
ie->value.choice.ENB_UE_S1AP_ID = ue_cap_info_ind_p->eNB_ue_s1ap_id;
ASN_SEQUENCE_ADD(&out->protocolIEs.list, ie);
/* mandatory */
ie = (S1AP_UECapabilityInfoIndicationIEs_t *)calloc(1, sizeof(S1AP_UECapabilityInfoIndicationIEs_t));
ie->id = S1AP_ProtocolIE_ID_id_UERadioCapability;
ie->criticality = S1AP_Criticality_reject;
ie->value.present = S1AP_UECapabilityInfoIndicationIEs__value_PR_UERadioCapability;
ie->value.choice.UERadioCapability.buf = ue_cap_info_ind_p->ue_radio_cap.buffer;
ie->value.choice.UERadioCapability.size = ue_cap_info_ind_p->ue_radio_cap.length;
ASN_SEQUENCE_ADD(&out->protocolIEs.list, ie);
/* optional */
if (s1ap_eNB_encode_pdu(&pdu, &buffer, &length) < 0) {
/* Encode procedure has failed... */
S1AP_ERROR("Failed to encode UE capabilities indication\n");
return -1;
}
MSC_LOG_TX_MESSAGE(
MSC_S1AP_ENB,
MSC_S1AP_MME,
(const char *)buffer,
length,
MSC_AS_TIME_FMT" UECapabilityInfoIndication initiatingMessage eNB_ue_s1ap_id %u mme_ue_s1ap_id %u",
0,0,//MSC_AS_TIME_ARGS(ctxt_pP),
ue_cap_info_ind_p->eNB_ue_s1ap_id,
ue_context_p->mme_ue_s1ap_id);
/* UE associated signalling -> use the allocated stream */
s1ap_eNB_itti_send_sctp_data_req(s1ap_eNB_instance_p->instance,
ue_context_p->mme_ref->assoc_id, buffer,
length, ue_context_p->tx_stream);
return 0;
}
//------------------------------------------------------------------------------
int s1ap_eNB_e_rab_setup_resp(instance_t instance,
s1ap_e_rab_setup_resp_t *e_rab_setup_resp_p)
//------------------------------------------------------------------------------
{
s1ap_eNB_instance_t *s1ap_eNB_instance_p = NULL;
struct s1ap_eNB_ue_context_s *ue_context_p = NULL;
S1AP_S1AP_PDU_t pdu;
S1AP_E_RABSetupResponse_t *out;
S1AP_E_RABSetupResponseIEs_t *ie;
uint8_t *buffer = NULL;
uint32_t length;
int i;
/* Retrieve the S1AP eNB instance associated with Mod_id */
s1ap_eNB_instance_p = s1ap_eNB_get_instance(instance);
DevAssert(e_rab_setup_resp_p != NULL);
DevAssert(s1ap_eNB_instance_p != NULL);
if ((ue_context_p = s1ap_eNB_get_ue_context(s1ap_eNB_instance_p,
e_rab_setup_resp_p->eNB_ue_s1ap_id)) == NULL) {
/* The context for this eNB ue s1ap id doesn't exist in the map of eNB UEs */
S1AP_WARN("Failed to find ue context associated with eNB ue s1ap id: 0x%06x\n",
e_rab_setup_resp_p->eNB_ue_s1ap_id);
return -1;
}
/* Uplink NAS transport can occur either during an s1ap connected state
* or during initial attach (for example: NAS authentication).
*/
if (!(ue_context_p->ue_state == S1AP_UE_CONNECTED ||
ue_context_p->ue_state == S1AP_UE_WAITING_CSR)) {
S1AP_WARN("You are attempting to send NAS data over non-connected "
"eNB ue s1ap id: %06x, current state: %d\n",
e_rab_setup_resp_p->eNB_ue_s1ap_id, ue_context_p->ue_state);
return -1;
}
/* Prepare the S1AP message to encode */
memset(&pdu, 0, sizeof(pdu));
pdu.present = S1AP_S1AP_PDU_PR_successfulOutcome;
pdu.choice.successfulOutcome.procedureCode = S1AP_ProcedureCode_id_E_RABSetup;
pdu.choice.successfulOutcome.criticality = S1AP_Criticality_reject;
pdu.choice.successfulOutcome.value.present = S1AP_SuccessfulOutcome__value_PR_E_RABSetupResponse;
out = &pdu.choice.successfulOutcome.value.choice.E_RABSetupResponse;
/* mandatory */
ie = (S1AP_E_RABSetupResponseIEs_t *)calloc(1, sizeof(S1AP_E_RABSetupResponseIEs_t));
ie->id = S1AP_ProtocolIE_ID_id_MME_UE_S1AP_ID;
ie->criticality = S1AP_Criticality_ignore;
ie->value.present = S1AP_E_RABSetupResponseIEs__value_PR_MME_UE_S1AP_ID;
ie->value.choice.MME_UE_S1AP_ID = ue_context_p->mme_ue_s1ap_id;
ASN_SEQUENCE_ADD(&out->protocolIEs.list, ie);
/* mandatory */
ie = (S1AP_E_RABSetupResponseIEs_t *)calloc(1, sizeof(S1AP_E_RABSetupResponseIEs_t));
ie->id = S1AP_ProtocolIE_ID_id_eNB_UE_S1AP_ID;
ie->criticality = S1AP_Criticality_ignore;
ie->value.present = S1AP_E_RABSetupResponseIEs__value_PR_ENB_UE_S1AP_ID;
ie->value.choice.ENB_UE_S1AP_ID = e_rab_setup_resp_p->eNB_ue_s1ap_id;
ASN_SEQUENCE_ADD(&out->protocolIEs.list, ie);
/* optional */
if (e_rab_setup_resp_p->nb_of_e_rabs > 0) {
ie = (S1AP_E_RABSetupResponseIEs_t *)calloc(1, sizeof(S1AP_E_RABSetupResponseIEs_t));
ie->id = S1AP_ProtocolIE_ID_id_E_RABSetupListBearerSURes;
ie->criticality = S1AP_Criticality_ignore;
ie->value.present = S1AP_E_RABSetupResponseIEs__value_PR_E_RABSetupListBearerSURes;
for (i = 0; i < e_rab_setup_resp_p->nb_of_e_rabs; i++) {
S1AP_E_RABSetupItemBearerSUResIEs_t *item;
/* mandatory */
item = (S1AP_E_RABSetupItemBearerSUResIEs_t *)calloc(1, sizeof(S1AP_E_RABSetupItemBearerSUResIEs_t));
item->id = S1AP_ProtocolIE_ID_id_E_RABSetupItemBearerSURes;
item->criticality = S1AP_Criticality_ignore;
item->value.present = S1AP_E_RABSetupItemBearerSUResIEs__value_PR_E_RABSetupItemBearerSURes;
item->value.choice.E_RABSetupItemBearerSURes.e_RAB_ID = e_rab_setup_resp_p->e_rabs[i].e_rab_id;
GTP_TEID_TO_ASN1(e_rab_setup_resp_p->e_rabs[i].gtp_teid, &item->value.choice.E_RABSetupItemBearerSURes.gTP_TEID);
item->value.choice.E_RABSetupItemBearerSURes.transportLayerAddress.buf = malloc(e_rab_setup_resp_p->e_rabs[i].eNB_addr.length);
memcpy(item->value.choice.E_RABSetupItemBearerSURes.transportLayerAddress.buf,
e_rab_setup_resp_p->e_rabs[i].eNB_addr.buffer,
e_rab_setup_resp_p->e_rabs[i].eNB_addr.length);
item->value.choice.E_RABSetupItemBearerSURes.transportLayerAddress.size = e_rab_setup_resp_p->e_rabs[i].eNB_addr.length;
item->value.choice.E_RABSetupItemBearerSURes.transportLayerAddress.bits_unused = 0;
S1AP_DEBUG("e_rab_setup_resp: e_rab ID %ld, teid %u, enb_addr %d.%d.%d.%d, SIZE %ld\n",
item->value.choice.E_RABSetupItemBearerSURes.e_RAB_ID,
e_rab_setup_resp_p->e_rabs[i].gtp_teid,
item->value.choice.E_RABSetupItemBearerSURes.transportLayerAddress.buf[0],
item->value.choice.E_RABSetupItemBearerSURes.transportLayerAddress.buf[1],
item->value.choice.E_RABSetupItemBearerSURes.transportLayerAddress.buf[2],
item->value.choice.E_RABSetupItemBearerSURes.transportLayerAddress.buf[3],
item->value.choice.E_RABSetupItemBearerSURes.transportLayerAddress.size);
ASN_SEQUENCE_ADD(&ie->value.choice.E_RABSetupListBearerSURes.list, item);
}
ASN_SEQUENCE_ADD(&out->protocolIEs.list, ie);
}
/* optional */
if (e_rab_setup_resp_p->nb_of_e_rabs_failed > 0) {
ie = (S1AP_E_RABSetupResponseIEs_t *)calloc(1, sizeof(S1AP_E_RABSetupResponseIEs_t));
ie->id = S1AP_ProtocolIE_ID_id_E_RABFailedToSetupListBearerSURes;
ie->criticality = S1AP_Criticality_ignore;
ie->value.present = S1AP_E_RABSetupResponseIEs__value_PR_E_RABList;
for (i = 0; i < e_rab_setup_resp_p->nb_of_e_rabs_failed; i++) {
S1AP_E_RABItemIEs_t *item;
item = (S1AP_E_RABItemIEs_t *)calloc(1, sizeof(S1AP_E_RABItemIEs_t));
item->id = S1AP_ProtocolIE_ID_id_E_RABItem;
item->criticality = S1AP_Criticality_ignore;
item->value.present = S1AP_E_RABItemIEs__value_PR_E_RABItem;
item->value.choice.E_RABItem.e_RAB_ID = e_rab_setup_resp_p->e_rabs_failed[i].e_rab_id;
item->value.choice.E_RABItem.cause.present = e_rab_setup_resp_p->e_rabs_failed[i].cause;
switch(item->value.choice.E_RABItem.cause.present) {
case S1AP_Cause_PR_radioNetwork:
item->value.choice.E_RABItem.cause.choice.radioNetwork = e_rab_setup_resp_p->e_rabs_failed[i].cause_value;
break;
case S1AP_Cause_PR_transport:
item->value.choice.E_RABItem.cause.choice.transport = e_rab_setup_resp_p->e_rabs_failed[i].cause_value;
break;
case S1AP_Cause_PR_nas:
item->value.choice.E_RABItem.cause.choice.nas = e_rab_setup_resp_p->e_rabs_failed[i].cause_value;
break;
case S1AP_Cause_PR_protocol:
item->value.choice.E_RABItem.cause.choice.protocol = e_rab_setup_resp_p->e_rabs_failed[i].cause_value;
break;
case S1AP_Cause_PR_misc:
item->value.choice.E_RABItem.cause.choice.misc = e_rab_setup_resp_p->e_rabs_failed[i].cause_value;
break;
case S1AP_Cause_PR_NOTHING:
default:
break;
}
S1AP_DEBUG("e_rab_setup_resp: failed e_rab ID %ld\n", item->value.choice.E_RABItem.e_RAB_ID);
ASN_SEQUENCE_ADD(&ie->value.choice.E_RABList.list, item);
}
ASN_SEQUENCE_ADD(&out->protocolIEs.list, ie);
}
/* optional */
if (0) {
ie = (S1AP_E_RABSetupResponseIEs_t *)calloc(1, sizeof(S1AP_E_RABSetupResponseIEs_t));
ie->id = S1AP_ProtocolIE_ID_id_CriticalityDiagnostics;
ie->criticality = S1AP_Criticality_ignore;
ie->value.present = S1AP_E_RABSetupResponseIEs__value_PR_CriticalityDiagnostics;
// ie->value.choice.CriticalityDiagnostics = ;
ASN_SEQUENCE_ADD(&out->protocolIEs.list, ie);
}
/* S1AP_E_RABSetupListBearerSURes_t e_RABSetupListBearerSURes;
memset(&e_RABSetupListBearerSURes, 0, sizeof(S1AP_E_RABSetupListBearerSURes_t));
if (s1ap_encode_s1ap_e_rabsetuplistbearersures(&e_RABSetupListBearerSURes, &initial_ies_p->e_RABSetupListBearerSURes.s1ap_E_RABSetupItemBearerSURes) < 0 )
return -1;
ASN_STRUCT_FREE_CONTENTS_ONLY(asn_DEF_S1AP_E_RABSetupListBearerSURes, &e_RABSetupListBearerSURes);
*/
fprintf(stderr, "start encode\n");
if (s1ap_eNB_encode_pdu(&pdu, &buffer, &length) < 0) {
S1AP_ERROR("Failed to encode uplink transport\n");
/* Encode procedure has failed... */
return -1;
}
MSC_LOG_TX_MESSAGE(
MSC_S1AP_ENB,
MSC_S1AP_MME,
(const char *)buffer,
length,
MSC_AS_TIME_FMT" E_RAN Setup successfulOutcome eNB_ue_s1ap_id %u mme_ue_s1ap_id %u",
0,0,//MSC_AS_TIME_ARGS(ctxt_pP),
e_rab_setup_resp_p->eNB_ue_s1ap_id,
ue_context_p->mme_ue_s1ap_id);
/* UE associated signalling -> use the allocated stream */
s1ap_eNB_itti_send_sctp_data_req(s1ap_eNB_instance_p->instance,
ue_context_p->mme_ref->assoc_id, buffer,
length, ue_context_p->tx_stream);
return 0;
}
//------------------------------------------------------------------------------
int s1ap_eNB_e_rab_modify_resp(instance_t instance,
s1ap_e_rab_modify_resp_t *e_rab_modify_resp_p)
//------------------------------------------------------------------------------
{
s1ap_eNB_instance_t *s1ap_eNB_instance_p = NULL;
struct s1ap_eNB_ue_context_s *ue_context_p = NULL;
S1AP_S1AP_PDU_t pdu;
S1AP_E_RABModifyResponse_t *out;
S1AP_E_RABModifyResponseIEs_t *ie;
uint8_t *buffer = NULL;
uint32_t length;
int i;
/* Retrieve the S1AP eNB instance associated with Mod_id */
s1ap_eNB_instance_p = s1ap_eNB_get_instance(instance);
DevAssert(e_rab_modify_resp_p != NULL);
DevAssert(s1ap_eNB_instance_p != NULL);
if ((ue_context_p = s1ap_eNB_get_ue_context(s1ap_eNB_instance_p,
e_rab_modify_resp_p->eNB_ue_s1ap_id)) == NULL) {
/* The context for this eNB ue s1ap id doesn't exist in the map of eNB UEs */
S1AP_WARN("Failed to find ue context associated with eNB ue s1ap id: 0x%06x\n",
e_rab_modify_resp_p->eNB_ue_s1ap_id);
return -1;
}
/* Uplink NAS transport can occur either during an s1ap connected state
* or during initial attach (for example: NAS authentication).
*/
if (!(ue_context_p->ue_state == S1AP_UE_CONNECTED ||
ue_context_p->ue_state == S1AP_UE_WAITING_CSR)) {
S1AP_WARN("You are attempting to send NAS data over non-connected "
"eNB ue s1ap id: %06x, current state: %d\n",
e_rab_modify_resp_p->eNB_ue_s1ap_id, ue_context_p->ue_state);
return -1;
}
/* Prepare the S1AP message to encode */
memset(&pdu, 0, sizeof(pdu));
pdu.present = S1AP_S1AP_PDU_PR_successfulOutcome;
pdu.choice.successfulOutcome.procedureCode = S1AP_ProcedureCode_id_E_RABModify;
pdu.choice.successfulOutcome.criticality = S1AP_Criticality_reject;
pdu.choice.successfulOutcome.value.present = S1AP_SuccessfulOutcome__value_PR_E_RABModifyResponse;
out = &pdu.choice.successfulOutcome.value.choice.E_RABModifyResponse;
/* mandatory */
ie = (S1AP_E_RABModifyResponseIEs_t *)calloc(1, sizeof(S1AP_E_RABModifyResponseIEs_t));
ie->id = S1AP_ProtocolIE_ID_id_MME_UE_S1AP_ID;
ie->criticality = S1AP_Criticality_ignore;
ie->value.present = S1AP_E_RABModifyResponseIEs__value_PR_MME_UE_S1AP_ID;
ie->value.choice.MME_UE_S1AP_ID = ue_context_p->mme_ue_s1ap_id;
ASN_SEQUENCE_ADD(&out->protocolIEs.list, ie);
/* mandatory */
ie = (S1AP_E_RABModifyResponseIEs_t *)calloc(1, sizeof(S1AP_E_RABModifyResponseIEs_t));
ie->id = S1AP_ProtocolIE_ID_id_eNB_UE_S1AP_ID;
ie->criticality = S1AP_Criticality_ignore;
ie->value.present = S1AP_E_RABModifyResponseIEs__value_PR_ENB_UE_S1AP_ID;
ie->value.choice.ENB_UE_S1AP_ID = e_rab_modify_resp_p->eNB_ue_s1ap_id;
ASN_SEQUENCE_ADD(&out->protocolIEs.list, ie);
/* optional */
if (e_rab_modify_resp_p->nb_of_e_rabs > 0) {
ie = (S1AP_E_RABModifyResponseIEs_t *)calloc(1, sizeof(S1AP_E_RABModifyResponseIEs_t));
ie->id = S1AP_ProtocolIE_ID_id_E_RABModifyListBearerModRes;
ie->criticality = S1AP_Criticality_ignore;
ie->value.present = S1AP_E_RABModifyResponseIEs__value_PR_E_RABModifyListBearerModRes;
for (i = 0; i < e_rab_modify_resp_p->nb_of_e_rabs; i++) {
S1AP_E_RABModifyItemBearerModResIEs_t *item;
item = (S1AP_E_RABModifyItemBearerModResIEs_t *)calloc(1, sizeof(S1AP_E_RABModifyItemBearerModResIEs_t));
item->id = S1AP_ProtocolIE_ID_id_E_RABModifyItemBearerModRes;
item->criticality = S1AP_Criticality_ignore;
item->value.present = S1AP_E_RABModifyItemBearerModResIEs__value_PR_E_RABModifyItemBearerModRes;
item->value.choice.E_RABModifyItemBearerModRes.e_RAB_ID = e_rab_modify_resp_p->e_rabs[i].e_rab_id;
S1AP_DEBUG("e_rab_modify_resp: modified e_rab ID %ld\n", item->value.choice.E_RABModifyItemBearerModRes.e_RAB_ID);
ASN_SEQUENCE_ADD(&ie->value.choice.E_RABModifyListBearerModRes.list, item);
}
ASN_SEQUENCE_ADD(&out->protocolIEs.list, ie);
}
/* optional */
if (e_rab_modify_resp_p->nb_of_e_rabs_failed > 0) {
ie = (S1AP_E_RABModifyResponseIEs_t *)calloc(1, sizeof(S1AP_E_RABModifyResponseIEs_t));
ie->id = S1AP_ProtocolIE_ID_id_E_RABFailedToModifyList;
ie->criticality = S1AP_Criticality_ignore;
ie->value.present = S1AP_E_RABModifyResponseIEs__value_PR_E_RABList;
for (i = 0; i < e_rab_modify_resp_p->nb_of_e_rabs_failed; i++) {
S1AP_E_RABItemIEs_t *item;
item = (S1AP_E_RABItemIEs_t *)calloc(1, sizeof(S1AP_E_RABItemIEs_t));
item->id = S1AP_ProtocolIE_ID_id_E_RABItem;
item->criticality = S1AP_Criticality_ignore;
item->value.present = S1AP_E_RABItemIEs__value_PR_E_RABItem;
item->value.choice.E_RABItem.e_RAB_ID = e_rab_modify_resp_p->e_rabs_failed[i].e_rab_id;
item->value.choice.E_RABItem.cause.present = e_rab_modify_resp_p->e_rabs_failed[i].cause;
switch(item->value.choice.E_RABItem.cause.present) {
case S1AP_Cause_PR_radioNetwork:
item->value.choice.E_RABItem.cause.choice.radioNetwork = e_rab_modify_resp_p->e_rabs_failed[i].cause_value;
break;
case S1AP_Cause_PR_transport:
item->value.choice.E_RABItem.cause.choice.transport = e_rab_modify_resp_p->e_rabs_failed[i].cause_value;
break;
case S1AP_Cause_PR_nas:
item->value.choice.E_RABItem.cause.choice.nas = e_rab_modify_resp_p->e_rabs_failed[i].cause_value;
break;
case S1AP_Cause_PR_protocol:
item->value.choice.E_RABItem.cause.choice.protocol = e_rab_modify_resp_p->e_rabs_failed[i].cause_value;
break;
case S1AP_Cause_PR_misc:
item->value.choice.E_RABItem.cause.choice.misc = e_rab_modify_resp_p->e_rabs_failed[i].cause_value;
break;
case S1AP_Cause_PR_NOTHING:
default:
break;
}
S1AP_DEBUG("e_rab_modify_resp: failed e_rab ID %ld\n", item->value.choice.E_RABItem.e_RAB_ID);
ASN_SEQUENCE_ADD(&ie->value.choice.E_RABList.list, item);
}
ASN_SEQUENCE_ADD(&out->protocolIEs.list, ie);
}
/* optional */
if (0) {
ie = (S1AP_E_RABModifyResponseIEs_t *)calloc(1, sizeof(S1AP_E_RABModifyResponseIEs_t));
ie->id = S1AP_ProtocolIE_ID_id_CriticalityDiagnostics;
ie->criticality = S1AP_Criticality_ignore;
ie->value.present = S1AP_E_RABModifyResponseIEs__value_PR_CriticalityDiagnostics;
// ie->value.choice.CriticalityDiagnostics = ;
ASN_SEQUENCE_ADD(&out->protocolIEs.list, ie);
}
fprintf(stderr, "start encode\n");
if (s1ap_eNB_encode_pdu(&pdu, &buffer, &length) < 0) {
S1AP_ERROR("Failed to encode uplink transport\n");
/* Encode procedure has failed... */
return -1;
}
MSC_LOG_TX_MESSAGE(
MSC_S1AP_ENB,
MSC_S1AP_MME,
(const char *)buffer,
length,
MSC_AS_TIME_FMT" E_RAN Modify successful Outcome eNB_ue_s1ap_id %u mme_ue_s1ap_id %u",
0,0,//MSC_AS_TIME_ARGS(ctxt_pP),
e_rab_modify_resp_p->eNB_ue_s1ap_id,
ue_context_p->mme_ue_s1ap_id);
/* UE associated signalling -> use the allocated stream */
s1ap_eNB_itti_send_sctp_data_req(s1ap_eNB_instance_p->instance,
ue_context_p->mme_ref->assoc_id, buffer,
length, ue_context_p->tx_stream);
return 0;
}
//------------------------------------------------------------------------------
int s1ap_eNB_e_rab_release_resp(instance_t instance,
s1ap_e_rab_release_resp_t *e_rab_release_resp_p)
//------------------------------------------------------------------------------
{
s1ap_eNB_instance_t *s1ap_eNB_instance_p = NULL;
struct s1ap_eNB_ue_context_s *ue_context_p = NULL;
S1AP_S1AP_PDU_t pdu;
S1AP_E_RABReleaseResponse_t *out;
S1AP_E_RABReleaseResponseIEs_t *ie;
uint8_t *buffer = NULL;
uint32_t length;
int i;
/* Retrieve the S1AP eNB instance associated with Mod_id */
s1ap_eNB_instance_p = s1ap_eNB_get_instance(instance);
DevAssert(e_rab_release_resp_p != NULL);
DevAssert(s1ap_eNB_instance_p != NULL);
if ((ue_context_p = s1ap_eNB_get_ue_context(s1ap_eNB_instance_p,
e_rab_release_resp_p->eNB_ue_s1ap_id)) == NULL) {
/* The context for this eNB ue s1ap id doesn't exist in the map of eNB UEs */
S1AP_WARN("Failed to find ue context associated with eNB ue s1ap id: %u\n",
e_rab_release_resp_p->eNB_ue_s1ap_id);
return -1;
}
/* Prepare the S1AP message to encode */
memset(&pdu, 0, sizeof(pdu));
pdu.present = S1AP_S1AP_PDU_PR_successfulOutcome;
pdu.choice.successfulOutcome.procedureCode = S1AP_ProcedureCode_id_E_RABRelease;
pdu.choice.successfulOutcome.criticality = S1AP_Criticality_reject;
pdu.choice.successfulOutcome.value.present = S1AP_SuccessfulOutcome__value_PR_E_RABReleaseResponse;
out = &pdu.choice.successfulOutcome.value.choice.E_RABReleaseResponse;
/* mandatory */
ie = (S1AP_E_RABReleaseResponseIEs_t *)calloc(1, sizeof(S1AP_E_RABReleaseResponseIEs_t));
ie->id = S1AP_ProtocolIE_ID_id_MME_UE_S1AP_ID;
ie->criticality = S1AP_Criticality_ignore;
ie->value.present = S1AP_E_RABReleaseResponseIEs__value_PR_MME_UE_S1AP_ID;
ie->value.choice.MME_UE_S1AP_ID = ue_context_p->mme_ue_s1ap_id;
ASN_SEQUENCE_ADD(&out->protocolIEs.list, ie);
/* mandatory */
ie = (S1AP_E_RABReleaseResponseIEs_t *)calloc(1, sizeof(S1AP_E_RABReleaseResponseIEs_t));
ie->id = S1AP_ProtocolIE_ID_id_eNB_UE_S1AP_ID;
ie->criticality = S1AP_Criticality_ignore;
ie->value.present = S1AP_E_RABReleaseResponseIEs__value_PR_ENB_UE_S1AP_ID;
ie->value.choice.ENB_UE_S1AP_ID = e_rab_release_resp_p->eNB_ue_s1ap_id;
ASN_SEQUENCE_ADD(&out->protocolIEs.list, ie);
/* optional */
if (e_rab_release_resp_p->nb_of_e_rabs_released > 0) {
ie = (S1AP_E_RABReleaseResponseIEs_t *)calloc(1, sizeof(S1AP_E_RABReleaseResponseIEs_t));
ie->id = S1AP_ProtocolIE_ID_id_E_RABReleaseListBearerRelComp;
ie->criticality = S1AP_Criticality_ignore;
ie->value.present = S1AP_E_RABReleaseResponseIEs__value_PR_E_RABReleaseListBearerRelComp;
for (i = 0; i < e_rab_release_resp_p->nb_of_e_rabs_released; i++) {
S1AP_E_RABReleaseItemBearerRelCompIEs_t *item;
item = (S1AP_E_RABReleaseItemBearerRelCompIEs_t *)calloc(1, sizeof(S1AP_E_RABReleaseItemBearerRelCompIEs_t));
item->id = S1AP_ProtocolIE_ID_id_E_RABReleaseItemBearerRelComp;
item->criticality = S1AP_Criticality_ignore;
item->value.present = S1AP_E_RABReleaseItemBearerRelCompIEs__value_PR_E_RABReleaseItemBearerRelComp;
item->value.choice.E_RABReleaseItemBearerRelComp.e_RAB_ID = e_rab_release_resp_p->e_rab_release[i].e_rab_id;
S1AP_DEBUG("e_rab_release_resp: e_rab ID %ld\n", item->value.choice.E_RABReleaseItemBearerRelComp.e_RAB_ID);
ASN_SEQUENCE_ADD(&ie->value.choice.E_RABReleaseListBearerRelComp.list, item);
}
ASN_SEQUENCE_ADD(&out->protocolIEs.list, ie);
}
/* optional */
if (e_rab_release_resp_p->nb_of_e_rabs_failed > 0) {
ie = (S1AP_E_RABReleaseResponseIEs_t *)calloc(1, sizeof(S1AP_E_RABReleaseResponseIEs_t));
ie->id = S1AP_ProtocolIE_ID_id_E_RABFailedToReleaseList;
ie->criticality = S1AP_Criticality_ignore;
ie->value.present = S1AP_E_RABReleaseResponseIEs__value_PR_E_RABList;
for (i = 0; i < e_rab_release_resp_p->nb_of_e_rabs_failed; i++) {
S1AP_E_RABItemIEs_t *item;
item = (S1AP_E_RABItemIEs_t *)calloc(1, sizeof(S1AP_E_RABItemIEs_t));
item->id = S1AP_ProtocolIE_ID_id_E_RABItem;
item->criticality = S1AP_Criticality_ignore;
item->value.present = S1AP_E_RABItemIEs__value_PR_E_RABItem;
item->value.choice.E_RABItem.e_RAB_ID = e_rab_release_resp_p->e_rabs_failed[i].e_rab_id;
item->value.choice.E_RABItem.cause.present = e_rab_release_resp_p->e_rabs_failed[i].cause;
switch(item->value.choice.E_RABItem.cause.present) {
case S1AP_Cause_PR_radioNetwork:
item->value.choice.E_RABItem.cause.choice.radioNetwork = e_rab_release_resp_p->e_rabs_failed[i].cause_value;
break;
case S1AP_Cause_PR_transport:
item->value.choice.E_RABItem.cause.choice.transport = e_rab_release_resp_p->e_rabs_failed[i].cause_value;
break;
case S1AP_Cause_PR_nas:
item->value.choice.E_RABItem.cause.choice.nas = e_rab_release_resp_p->e_rabs_failed[i].cause_value;
break;
case S1AP_Cause_PR_protocol:
item->value.choice.E_RABItem.cause.choice.protocol = e_rab_release_resp_p->e_rabs_failed[i].cause_value;
break;
case S1AP_Cause_PR_misc:
item->value.choice.E_RABItem.cause.choice.misc = e_rab_release_resp_p->e_rabs_failed[i].cause_value;
break;
case S1AP_Cause_PR_NOTHING:
default:
break;
}
ASN_SEQUENCE_ADD(&ie->value.choice.E_RABList.list, item);
}
ASN_SEQUENCE_ADD(&out->protocolIEs.list, ie);
}
if (s1ap_eNB_encode_pdu(&pdu, &buffer, &length) < 0) {
S1AP_ERROR("Failed to encode release response\n");
/* Encode procedure has failed... */
return -1;
}
MSC_LOG_TX_MESSAGE(
MSC_S1AP_ENB,
MSC_S1AP_MME,
(const char *)buffer,
length,
MSC_AS_TIME_FMT" E_RAN Release successfulOutcome eNB_ue_s1ap_id %u mme_ue_s1ap_id %u",
0,0,//MSC_AS_TIME_ARGS(ctxt_pP),
e_rab_release_resp_p->eNB_ue_s1ap_id,
ue_context_p->mme_ue_s1ap_id);
/* UE associated signalling -> use the allocated stream */
s1ap_eNB_itti_send_sctp_data_req(s1ap_eNB_instance_p->instance,
ue_context_p->mme_ref->assoc_id, buffer,
length, ue_context_p->tx_stream);
S1AP_INFO("e_rab_release_response sended eNB_UE_S1AP_ID %d mme_ue_s1ap_id %d nb_of_e_rabs_released %d nb_of_e_rabs_failed %d\n",
e_rab_release_resp_p->eNB_ue_s1ap_id, ue_context_p->mme_ue_s1ap_id,e_rab_release_resp_p->nb_of_e_rabs_released,e_rab_release_resp_p->nb_of_e_rabs_failed);
return 0;
}
int s1ap_eNB_path_switch_req(instance_t instance,
s1ap_path_switch_req_t *path_switch_req_p)
//------------------------------------------------------------------------------
{
s1ap_eNB_instance_t *s1ap_eNB_instance_p = NULL;
struct s1ap_eNB_ue_context_s *ue_context_p = NULL;
struct s1ap_eNB_mme_data_s *mme_desc_p = NULL;
S1AP_S1AP_PDU_t pdu;
S1AP_PathSwitchRequest_t *out;
S1AP_PathSwitchRequestIEs_t *ie;
S1AP_E_RABToBeSwitchedDLItemIEs_t *e_RABToBeSwitchedDLItemIEs;
S1AP_E_RABToBeSwitchedDLItem_t *e_RABToBeSwitchedDLItem;
uint8_t *buffer = NULL;
uint32_t length;
int ret = 0;//-1;
/* Retrieve the S1AP eNB instance associated with Mod_id */
s1ap_eNB_instance_p = s1ap_eNB_get_instance(instance);
DevAssert(path_switch_req_p != NULL);
DevAssert(s1ap_eNB_instance_p != NULL);
//if ((ue_context_p = s1ap_eNB_get_ue_context(s1ap_eNB_instance_p,
// path_switch_req_p->eNB_ue_s1ap_id)) == NULL) {
/* The context for this eNB ue s1ap id doesn't exist in the map of eNB UEs */
//S1AP_WARN("Failed to find ue context associated with eNB ue s1ap id: 0x%06x\n",
// path_switch_req_p->eNB_ue_s1ap_id);
//return -1;
//}
/* Uplink NAS transport can occur either during an s1ap connected state
* or during initial attach (for example: NAS authentication).
*/
//if (!(ue_context_p->ue_state == S1AP_UE_CONNECTED ||
// ue_context_p->ue_state == S1AP_UE_WAITING_CSR)) {
//S1AP_WARN("You are attempting to send NAS data over non-connected "
// "eNB ue s1ap id: %06x, current state: %d\n",
// path_switch_req_p->eNB_ue_s1ap_id, ue_context_p->ue_state);
//return -1;
//}
/* Select the MME corresponding to the provided GUMMEI. */
mme_desc_p = s1ap_eNB_nnsf_select_mme_by_gummei_no_cause(s1ap_eNB_instance_p, path_switch_req_p->ue_gummei);
if (mme_desc_p == NULL) {
/*
* In case eNB has no MME associated, the eNB should inform RRC and discard
* this request.
*/
S1AP_WARN("No MME is associated to the eNB\n");
// TODO: Inform RRC
return -1;
}
/* The eNB should allocate a unique eNB UE S1AP ID for this UE. The value
* will be used for the duration of the connectivity.
*/
ue_context_p = s1ap_eNB_allocate_new_UE_context();
DevAssert(ue_context_p != NULL);
/* Keep a reference to the selected MME */
ue_context_p->mme_ref = mme_desc_p;
ue_context_p->ue_initial_id = path_switch_req_p->ue_initial_id;
ue_context_p->eNB_instance = s1ap_eNB_instance_p;
do {
struct s1ap_eNB_ue_context_s *collision_p;
/* Peek a random value for the eNB_ue_s1ap_id */
ue_context_p->eNB_ue_s1ap_id = (random() + random()) & 0x00ffffff;
if ((collision_p = RB_INSERT(s1ap_ue_map, &s1ap_eNB_instance_p->s1ap_ue_head, ue_context_p))
== NULL) {
S1AP_DEBUG("Found usable eNB_ue_s1ap_id: 0x%06x %u(10)\n",
ue_context_p->eNB_ue_s1ap_id,
ue_context_p->eNB_ue_s1ap_id);
/* Break the loop as the id is not already used by another UE */
break;
}
} while(1);
ue_context_p->mme_ue_s1ap_id = path_switch_req_p->mme_ue_s1ap_id;
/* Prepare the S1AP message to encode */
memset(&pdu, 0, sizeof(pdu));
pdu.present = S1AP_S1AP_PDU_PR_initiatingMessage;
pdu.choice.initiatingMessage.procedureCode = S1AP_ProcedureCode_id_PathSwitchRequest;
pdu.choice.initiatingMessage.criticality = S1AP_Criticality_reject;
pdu.choice.initiatingMessage.value.present = S1AP_InitiatingMessage__value_PR_PathSwitchRequest;
out = &pdu.choice.initiatingMessage.value.choice.PathSwitchRequest;
/* mandatory */
ie = (S1AP_PathSwitchRequestIEs_t *)calloc(1, sizeof(S1AP_PathSwitchRequestIEs_t));
ie->id = S1AP_ProtocolIE_ID_id_eNB_UE_S1AP_ID;
ie->criticality = S1AP_Criticality_reject;
ie->value.present = S1AP_PathSwitchRequestIEs__value_PR_ENB_UE_S1AP_ID;
ie->value.choice.ENB_UE_S1AP_ID = ue_context_p->eNB_ue_s1ap_id;
ASN_SEQUENCE_ADD(&out->protocolIEs.list, ie);
/* mandatory */
if (path_switch_req_p->nb_of_e_rabs > 0) {
ie = (S1AP_PathSwitchRequestIEs_t *)calloc(1, sizeof(S1AP_PathSwitchRequestIEs_t));
ie->id = S1AP_ProtocolIE_ID_id_E_RABToBeSwitchedDLList;
ie->criticality = S1AP_Criticality_reject;
ie->value.present = S1AP_PathSwitchRequestIEs__value_PR_E_RABToBeSwitchedDLList;
for (int i = 0; i < path_switch_req_p->nb_of_e_rabs; i++) {
e_RABToBeSwitchedDLItemIEs = (S1AP_E_RABToBeSwitchedDLItemIEs_t *)calloc(1, sizeof(S1AP_E_RABToBeSwitchedDLItemIEs_t));
e_RABToBeSwitchedDLItemIEs->id = S1AP_ProtocolIE_ID_id_E_RABToBeSwitchedDLItem;
e_RABToBeSwitchedDLItemIEs->criticality = S1AP_Criticality_reject;
e_RABToBeSwitchedDLItemIEs->value.present = S1AP_E_RABToBeSwitchedDLItemIEs__value_PR_E_RABToBeSwitchedDLItem;
e_RABToBeSwitchedDLItem = &e_RABToBeSwitchedDLItemIEs->value.choice.E_RABToBeSwitchedDLItem;
e_RABToBeSwitchedDLItem->e_RAB_ID = path_switch_req_p->e_rabs_tobeswitched[i].e_rab_id;
INT32_TO_OCTET_STRING(path_switch_req_p->e_rabs_tobeswitched[i].gtp_teid, &e_RABToBeSwitchedDLItem->gTP_TEID);
e_RABToBeSwitchedDLItem->transportLayerAddress.size = path_switch_req_p->e_rabs_tobeswitched[i].eNB_addr.length;
e_RABToBeSwitchedDLItem->transportLayerAddress.bits_unused = 0;
e_RABToBeSwitchedDLItem->transportLayerAddress.buf = calloc(1,e_RABToBeSwitchedDLItem->transportLayerAddress.size);
memcpy (e_RABToBeSwitchedDLItem->transportLayerAddress.buf,
path_switch_req_p->e_rabs_tobeswitched[i].eNB_addr.buffer,
path_switch_req_p->e_rabs_tobeswitched[i].eNB_addr.length);
S1AP_DEBUG("path_switch_req: e_rab ID %ld, teid %u, enb_addr %d.%d.%d.%d, SIZE %zu\n",
e_RABToBeSwitchedDLItem->e_RAB_ID,
path_switch_req_p->e_rabs_tobeswitched[i].gtp_teid,
e_RABToBeSwitchedDLItem->transportLayerAddress.buf[0],
e_RABToBeSwitchedDLItem->transportLayerAddress.buf[1],
e_RABToBeSwitchedDLItem->transportLayerAddress.buf[2],
e_RABToBeSwitchedDLItem->transportLayerAddress.buf[3],
e_RABToBeSwitchedDLItem->transportLayerAddress.size);
ASN_SEQUENCE_ADD(&ie->value.choice.E_RABToBeSwitchedDLList.list, e_RABToBeSwitchedDLItemIEs);
}
ASN_SEQUENCE_ADD(&out->protocolIEs.list, ie);
}
/* mandatory */
ie = (S1AP_PathSwitchRequestIEs_t *)calloc(1, sizeof(S1AP_PathSwitchRequestIEs_t));
ie->id = S1AP_ProtocolIE_ID_id_SourceMME_UE_S1AP_ID;
ie->criticality = S1AP_Criticality_reject;
ie->value.present = S1AP_PathSwitchRequestIEs__value_PR_MME_UE_S1AP_ID;
ie->value.choice.MME_UE_S1AP_ID = path_switch_req_p->mme_ue_s1ap_id;
ASN_SEQUENCE_ADD(&out->protocolIEs.list, ie);
/* mandatory */
ie = (S1AP_PathSwitchRequestIEs_t *)calloc(1, sizeof(S1AP_PathSwitchRequestIEs_t));
ie->id = S1AP_ProtocolIE_ID_id_EUTRAN_CGI;
ie->criticality = S1AP_Criticality_ignore;
ie->value.present = S1AP_PathSwitchRequestIEs__value_PR_EUTRAN_CGI;
MACRO_ENB_ID_TO_CELL_IDENTITY(s1ap_eNB_instance_p->eNB_id,
0,
&ie->value.choice.EUTRAN_CGI.cell_ID);
MCC_MNC_TO_TBCD(s1ap_eNB_instance_p->mcc[0],
s1ap_eNB_instance_p->mnc[0],
s1ap_eNB_instance_p->mnc_digit_length[0],
&ie->value.choice.EUTRAN_CGI.pLMNidentity);
ASN_SEQUENCE_ADD(&out->protocolIEs.list, ie);
/* mandatory */
ie = (S1AP_PathSwitchRequestIEs_t *)calloc(1, sizeof(S1AP_PathSwitchRequestIEs_t));
ie->id = S1AP_ProtocolIE_ID_id_TAI;
ie->criticality = S1AP_Criticality_ignore;
ie->value.present = S1AP_PathSwitchRequestIEs__value_PR_TAI;
/* Assuming TAI is the TAI from the cell */
INT16_TO_OCTET_STRING(s1ap_eNB_instance_p->tac, &ie->value.choice.TAI.tAC);
MCC_MNC_TO_PLMNID(s1ap_eNB_instance_p->mcc[0],
s1ap_eNB_instance_p->mnc[0],
s1ap_eNB_instance_p->mnc_digit_length[0],
&ie->value.choice.TAI.pLMNidentity);
ASN_SEQUENCE_ADD(&out->protocolIEs.list, ie);
/* mandatory */
ie = (S1AP_PathSwitchRequestIEs_t *)calloc(1, sizeof(S1AP_PathSwitchRequestIEs_t));
ie->id = S1AP_ProtocolIE_ID_id_UESecurityCapabilities;
ie->criticality = S1AP_Criticality_ignore;
ie->value.present = S1AP_PathSwitchRequestIEs__value_PR_UESecurityCapabilities;
ENCRALG_TO_BIT_STRING(path_switch_req_p->security_capabilities.encryption_algorithms,
&ie->value.choice.UESecurityCapabilities.encryptionAlgorithms);
INTPROTALG_TO_BIT_STRING(path_switch_req_p->security_capabilities.integrity_algorithms,
&ie->value.choice.UESecurityCapabilities.integrityProtectionAlgorithms);
ASN_SEQUENCE_ADD(&out->protocolIEs.list, ie);
if (s1ap_eNB_encode_pdu(&pdu, &buffer, &length) < 0) {
S1AP_ERROR("Failed to encode Path Switch Req \n");
/* Encode procedure has failed... */
return -1;
}
/* Update the current S1AP UE state */
ue_context_p->ue_state = S1AP_UE_WAITING_CSR;
/* Assign a stream for this UE :
* From 3GPP 36.412 7)Transport layers:
* Within the SCTP association established between one MME and eNB pair:
* - a single pair of stream identifiers shall be reserved for the sole use
* of S1AP elementary procedures that utilize non UE-associated signalling.
* - At least one pair of stream identifiers shall be reserved for the sole use
* of S1AP elementary procedures that utilize UE-associated signallings.
* However a few pairs (i.e. more than one) should be reserved.
* - A single UE-associated signalling shall use one SCTP stream and
* the stream should not be changed during the communication of the
* UE-associated signalling.
*/
mme_desc_p->nextstream = (mme_desc_p->nextstream + 1) % mme_desc_p->out_streams;
if ((mme_desc_p->nextstream == 0) && (mme_desc_p->out_streams > 1)) {
mme_desc_p->nextstream += 1;
}
ue_context_p->tx_stream = mme_desc_p->nextstream;
MSC_LOG_TX_MESSAGE(
MSC_S1AP_ENB,
MSC_S1AP_MME,
(const char *)buffer,
length,
MSC_AS_TIME_FMT" E_RAN Setup successfulOutcome eNB_ue_s1ap_id %u mme_ue_s1ap_id %u",
0,0,//MSC_AS_TIME_ARGS(ctxt_pP),
ue_context_p->eNB_ue_s1ap_id,
path_switch_req_p->mme_ue_s1ap_id);
/* UE associated signalling -> use the allocated stream */
s1ap_eNB_itti_send_sctp_data_req(s1ap_eNB_instance_p->instance,
mme_desc_p->assoc_id, buffer,
length, ue_context_p->tx_stream);
return ret;
}
//-----------------------------------------------------------------------------
/*
* eNB generate a S1 E_RAB Modification Indication towards MME
*/
/*int s1ap_eNB_generate_E_RAB_Modification_Indication(
instance_t instance,
s1ap_e_rab_modification_ind_t *e_rab_modification_ind)
//-----------------------------------------------------------------------------
{
struct s1ap_eNB_ue_context_s *ue_context_p = NULL;
S1AP_S1AP_PDU_t pdu;
S1AP_E_RABModificationIndication_t *out = NULL;
S1AP_E_RABModificationIndicationIEs_t *ie = NULL;
S1AP_E_RABToBeModifiedItemBearerModInd_t *E_RAB_ToBeModifiedItem_BearerModInd = NULL;
S1AP_E_RABToBeModifiedItemBearerModIndIEs_t *E_RAB_ToBeModifiedItem_BearerModInd_IEs = NULL;
S1AP_E_RABNotToBeModifiedItemBearerModInd_t *E_RAB_NotToBeModifiedItem_BearerModInd = NULL;
S1AP_E_RABNotToBeModifiedItemBearerModIndIEs_t *E_RAB_NotToBeModifiedItem_BearerModInd_IEs = NULL;
s1ap_eNB_instance_t *s1ap_eNB_instance_p = NULL;
s1ap_eNB_instance_p = s1ap_eNB_get_instance(instance);
uint8_t *buffer = NULL;
uint32_t len = 0;
int ret = 0;
DevAssert(s1ap_eNB_instance_p != NULL);
DevAssert(e_rab_modification_ind != NULL);
int num_e_rabs_tobemodified = e_rab_modification_ind->nb_of_e_rabs_tobemodified;
int num_e_rabs_nottobemodified = e_rab_modification_ind->nb_of_e_rabs_nottobemodified;
uint32_t CSG_id = 0;
if ((ue_context_p = s1ap_eNB_get_ue_context(s1ap_eNB_instance_p,
e_rab_modification_ind->eNB_ue_s1ap_id)) == NULL) {
// The context for this eNB ue s1ap id doesn't exist in the map of eNB UEs
S1AP_WARN("Failed to find ue context associated with eNB ue s1ap id: 0x%06x\n",
e_rab_modification_ind->eNB_ue_s1ap_id);
return -1;
}
// Prepare the S1AP message to encode
memset(&pdu, 0, sizeof(pdu));
pdu.present = S1AP_S1AP_PDU_PR_initiatingMessage;
pdu.choice.initiatingMessage.procedureCode = S1AP_ProcedureCode_id_E_RABModificationIndication;
pdu.choice.initiatingMessage.criticality = S1AP_Criticality_reject;
pdu.choice.initiatingMessage.value.present = S1AP_InitiatingMessage__value_PR_E_RABModificationIndication;
out = &pdu.choice.initiatingMessage.value.choice.E_RABModificationIndication;
// mandatory
ie = (S1AP_E_RABModificationIndicationIEs_t *)calloc(1, sizeof(S1AP_E_RABModificationIndicationIEs_t));
ie->id = S1AP_ProtocolIE_ID_id_MME_UE_S1AP_ID;
ie->criticality = S1AP_Criticality_reject;
ie->value.present = S1AP_E_RABModificationIndicationIEs__value_PR_MME_UE_S1AP_ID;
ie->value.choice.MME_UE_S1AP_ID = e_rab_modification_ind->mme_ue_s1ap_id;
ASN_SEQUENCE_ADD(&out->protocolIEs.list, ie);
ie = (S1AP_E_RABModificationIndicationIEs_t *)calloc(1, sizeof(S1AP_E_RABModificationIndicationIEs_t));
ie->id = S1AP_ProtocolIE_ID_id_eNB_UE_S1AP_ID;
ie->criticality = S1AP_Criticality_reject;
ie->value.present = S1AP_E_RABModificationIndicationIEs__value_PR_ENB_UE_S1AP_ID;
ie->value.choice.ENB_UE_S1AP_ID = e_rab_modification_ind->eNB_ue_s1ap_id;
ASN_SEQUENCE_ADD(&out->protocolIEs.list, ie);
//E-RABs to be modified list
ie = (S1AP_E_RABModificationIndicationIEs_t *)calloc(1, sizeof(S1AP_E_RABModificationIndicationIEs_t));
ie->id = S1AP_ProtocolIE_ID_id_E_RABToBeModifiedListBearerModInd;
ie->criticality = S1AP_Criticality_reject;
ie->value.present = S1AP_E_RABModificationIndicationIEs__value_PR_E_RABToBeModifiedListBearerModInd;
//The following two for-loops here will probably need to change. We should do a different type of search
for(int i=0; i<num_e_rabs_tobemodified; i++){
E_RAB_ToBeModifiedItem_BearerModInd_IEs = (S1AP_E_RABToBeModifiedItemBearerModIndIEs_t *)calloc(1,sizeof(S1AP_E_RABToBeModifiedItemBearerModIndIEs_t));
E_RAB_ToBeModifiedItem_BearerModInd_IEs->id = S1AP_ProtocolIE_ID_id_E_RABToBeModifiedItemBearerModInd;
E_RAB_ToBeModifiedItem_BearerModInd_IEs->criticality = S1AP_Criticality_reject;
E_RAB_ToBeModifiedItem_BearerModInd_IEs->value.present = S1AP_E_RABToBeModifiedItemBearerModIndIEs__value_PR_E_RABToBeModifiedItemBearerModInd;
E_RAB_ToBeModifiedItem_BearerModInd = &E_RAB_ToBeModifiedItem_BearerModInd_IEs->value.choice.E_RABToBeModifiedItemBearerModInd;
{
E_RAB_ToBeModifiedItem_BearerModInd->e_RAB_ID = e_rab_modification_ind->e_rabs_tobemodified[i].e_rab_id;
E_RAB_ToBeModifiedItem_BearerModInd->transportLayerAddress.size = e_rab_modification_ind->e_rabs_tobemodified[i].eNB_addr.length/8;
E_RAB_ToBeModifiedItem_BearerModInd->transportLayerAddress.bits_unused = e_rab_modification_ind->e_rabs_tobemodified[i].eNB_addr.length%8;
E_RAB_ToBeModifiedItem_BearerModInd->transportLayerAddress.buf = calloc(1, E_RAB_ToBeModifiedItem_BearerModInd->transportLayerAddress.size);
memcpy (E_RAB_ToBeModifiedItem_BearerModInd->transportLayerAddress.buf, e_rab_modification_ind->e_rabs_tobemodified[i].eNB_addr.buffer,
E_RAB_ToBeModifiedItem_BearerModInd->transportLayerAddress.size);
INT32_TO_OCTET_STRING(e_rab_modification_ind->e_rabs_tobemodified[i].gtp_teid, &E_RAB_ToBeModifiedItem_BearerModInd->dL_GTP_TEID);
}
ASN_SEQUENCE_ADD(&ie->value.choice.E_RABToBeModifiedListBearerModInd.list, E_RAB_ToBeModifiedItem_BearerModInd_IEs);
}
ASN_SEQUENCE_ADD(&out->protocolIEs.list, ie);
//E-RABs NOT to be modified list
ie = (S1AP_E_RABModificationIndicationIEs_t *)calloc(1, sizeof(S1AP_E_RABModificationIndicationIEs_t));
ie->id = S1AP_ProtocolIE_ID_id_E_RABNotToBeModifiedListBearerModInd;
ie->criticality = S1AP_Criticality_reject;
if(num_e_rabs_nottobemodified > 0) {
ie->value.present = S1AP_E_RABModificationIndicationIEs__value_PR_E_RABNotToBeModifiedListBearerModInd;
for(int i=0; i<num_e_rabs_nottobemodified; i++){
E_RAB_NotToBeModifiedItem_BearerModInd_IEs = (S1AP_E_RABNotToBeModifiedItemBearerModIndIEs_t *)calloc(1,sizeof(S1AP_E_RABNotToBeModifiedItemBearerModIndIEs_t));
E_RAB_NotToBeModifiedItem_BearerModInd_IEs->id = S1AP_ProtocolIE_ID_id_E_RABNotToBeModifiedItemBearerModInd;
E_RAB_NotToBeModifiedItem_BearerModInd_IEs->criticality = S1AP_Criticality_reject;
E_RAB_NotToBeModifiedItem_BearerModInd_IEs->value.present = S1AP_E_RABNotToBeModifiedItemBearerModIndIEs__value_PR_E_RABNotToBeModifiedItemBearerModInd;
E_RAB_NotToBeModifiedItem_BearerModInd = &E_RAB_NotToBeModifiedItem_BearerModInd_IEs->value.choice.E_RABNotToBeModifiedItemBearerModInd;
{
E_RAB_NotToBeModifiedItem_BearerModInd->e_RAB_ID = e_rab_modification_ind->e_rabs_nottobemodified[i].e_rab_id;
E_RAB_NotToBeModifiedItem_BearerModInd->transportLayerAddress.size = e_rab_modification_ind->e_rabs_nottobemodified[i].eNB_addr.length/8;
E_RAB_NotToBeModifiedItem_BearerModInd->transportLayerAddress.bits_unused = e_rab_modification_ind->e_rabs_nottobemodified[i].eNB_addr.length%8;
E_RAB_NotToBeModifiedItem_BearerModInd->transportLayerAddress.buf =
calloc(1, E_RAB_NotToBeModifiedItem_BearerModInd->transportLayerAddress.size);
memcpy (E_RAB_NotToBeModifiedItem_BearerModInd->transportLayerAddress.buf, e_rab_modification_ind->e_rabs_nottobemodified[i].eNB_addr.buffer,
E_RAB_NotToBeModifiedItem_BearerModInd->transportLayerAddress.size);
INT32_TO_OCTET_STRING(e_rab_modification_ind->e_rabs_nottobemodified[i].gtp_teid, &E_RAB_NotToBeModifiedItem_BearerModInd->dL_GTP_TEID);
}
ASN_SEQUENCE_ADD(&ie->value.choice.E_RABNotToBeModifiedListBearerModInd.list, E_RAB_NotToBeModifiedItem_BearerModInd_IEs);
}
}
else{
ie->value.present = S1AP_E_RABModificationIndicationIEs__value_PR_E_RABNotToBeModifiedListBearerModInd;
ie->value.choice.E_RABNotToBeModifiedListBearerModInd.list.size = 0;
}
ASN_SEQUENCE_ADD(&out->protocolIEs.list, ie);
ie = (S1AP_E_RABModificationIndicationIEs_t *)calloc(1, sizeof(S1AP_E_RABModificationIndicationIEs_t));
ie->id = S1AP_ProtocolIE_ID_id_CSGMembershipInfo;
ie->criticality = S1AP_Criticality_reject;
ie->value.present = S1AP_E_RABModificationIndicationIEs__value_PR_CSGMembershipInfo;
ie->value.choice.CSGMembershipInfo.cSGMembershipStatus = S1AP_CSGMembershipStatus_member;
INT32_TO_BIT_STRING(CSG_id, &ie->value.choice.CSGMembershipInfo.cSG_Id);
ASN_SEQUENCE_ADD(&out->protocolIEs.list, ie);
if (s1ap_eNB_encode_pdu(&pdu, &buffer, &len) < 0) {
S1AP_ERROR("Failed to encode S1 E-RAB modification indication \n");
return -1;
}
// Non UE-Associated signalling -> stream = 0
S1AP_INFO("Size of encoded message: %d \n", len);
s1ap_eNB_itti_send_sctp_data_req(s1ap_eNB_instance_p->instance,
ue_context_p->mme_ref->assoc_id, buffer,
len, ue_context_p->tx_stream);
//s1ap_eNB_itti_send_sctp_data_req(s1ap_eNB_instance_p->instance, ue_context_p->mme_ref->assoc_id, buffer, len, 0);
return ret;
}*/
int s1ap_eNB_generate_E_RAB_Modification_Indication(
instance_t instance,
s1ap_e_rab_modification_ind_t *e_rab_modification_ind)
//-----------------------------------------------------------------------------
{
struct s1ap_eNB_ue_context_s *ue_context_p = NULL;
S1AP_S1AP_PDU_t pdu;
S1AP_E_RABModificationIndication_t *out = NULL;
S1AP_E_RABModificationIndicationIEs_t *ie = NULL;
S1AP_E_RABToBeModifiedItemBearerModInd_t *E_RAB_ToBeModifiedItem_BearerModInd = NULL;
S1AP_E_RABToBeModifiedItemBearerModIndIEs_t *E_RAB_ToBeModifiedItem_BearerModInd_IEs = NULL;
//S1AP_E_RABNotToBeModifiedItemBearerModInd_t *E_RAB_NotToBeModifiedItem_BearerModInd = NULL;
//S1AP_E_RABNotToBeModifiedItemBearerModIndIEs_t *E_RAB_NotToBeModifiedItem_BearerModInd_IEs = NULL;
s1ap_eNB_instance_t *s1ap_eNB_instance_p = NULL;
s1ap_eNB_instance_p = s1ap_eNB_get_instance(instance);
uint8_t *buffer = NULL;
uint32_t len = 0;
int ret = 0;
DevAssert(s1ap_eNB_instance_p != NULL);
DevAssert(e_rab_modification_ind != NULL);
int num_e_rabs_tobemodified = e_rab_modification_ind->nb_of_e_rabs_tobemodified;
//int num_e_rabs_nottobemodified = e_rab_modification_ind->nb_of_e_rabs_nottobemodified;
//uint32_t CSG_id = 0;
//uint32_t pseudo_gtp_teid = 10;
if ((ue_context_p = s1ap_eNB_get_ue_context(s1ap_eNB_instance_p,
e_rab_modification_ind->eNB_ue_s1ap_id)) == NULL) {
// The context for this eNB ue s1ap id doesn't exist in the map of eNB UEs
S1AP_WARN("Failed to find ue context associated with eNB ue s1ap id: 0x%06x\n",
e_rab_modification_ind->eNB_ue_s1ap_id);
return -1;
}
// Prepare the S1AP message to encode
memset(&pdu, 0, sizeof(pdu));
pdu.present = S1AP_S1AP_PDU_PR_initiatingMessage;
pdu.choice.initiatingMessage.procedureCode = S1AP_ProcedureCode_id_E_RABModificationIndication;
pdu.choice.initiatingMessage.criticality = S1AP_Criticality_reject;
pdu.choice.initiatingMessage.value.present = S1AP_InitiatingMessage__value_PR_E_RABModificationIndication;
out = &pdu.choice.initiatingMessage.value.choice.E_RABModificationIndication;
/* mandatory */
ie = (S1AP_E_RABModificationIndicationIEs_t *)calloc(1, sizeof(S1AP_E_RABModificationIndicationIEs_t));
ie->id = S1AP_ProtocolIE_ID_id_MME_UE_S1AP_ID;
ie->criticality = S1AP_Criticality_reject;
ie->value.present = S1AP_E_RABModificationIndicationIEs__value_PR_MME_UE_S1AP_ID;
ie->value.choice.MME_UE_S1AP_ID = e_rab_modification_ind->mme_ue_s1ap_id;
ASN_SEQUENCE_ADD(&out->protocolIEs.list, ie);
ie = (S1AP_E_RABModificationIndicationIEs_t *)calloc(1, sizeof(S1AP_E_RABModificationIndicationIEs_t));
ie->id = S1AP_ProtocolIE_ID_id_eNB_UE_S1AP_ID;
ie->criticality = S1AP_Criticality_reject;
ie->value.present = S1AP_E_RABModificationIndicationIEs__value_PR_ENB_UE_S1AP_ID;
ie->value.choice.ENB_UE_S1AP_ID = e_rab_modification_ind->eNB_ue_s1ap_id;
ASN_SEQUENCE_ADD(&out->protocolIEs.list, ie);
//E-RABs to be modified list
ie = (S1AP_E_RABModificationIndicationIEs_t *)calloc(1, sizeof(S1AP_E_RABModificationIndicationIEs_t));
ie->id = S1AP_ProtocolIE_ID_id_E_RABToBeModifiedListBearerModInd;
ie->criticality = S1AP_Criticality_reject;
ie->value.present = S1AP_E_RABModificationIndicationIEs__value_PR_E_RABToBeModifiedListBearerModInd;
//The following two for-loops here will probably need to change. We should do a different type of search
for(int i=0; i<num_e_rabs_tobemodified; i++){
E_RAB_ToBeModifiedItem_BearerModInd_IEs = (S1AP_E_RABToBeModifiedItemBearerModIndIEs_t *)calloc(1,sizeof(S1AP_E_RABToBeModifiedItemBearerModIndIEs_t));
E_RAB_ToBeModifiedItem_BearerModInd_IEs->id = S1AP_ProtocolIE_ID_id_E_RABToBeModifiedItemBearerModInd;
E_RAB_ToBeModifiedItem_BearerModInd_IEs->criticality = S1AP_Criticality_reject;
E_RAB_ToBeModifiedItem_BearerModInd_IEs->value.present = S1AP_E_RABToBeModifiedItemBearerModIndIEs__value_PR_E_RABToBeModifiedItemBearerModInd;
E_RAB_ToBeModifiedItem_BearerModInd = &E_RAB_ToBeModifiedItem_BearerModInd_IEs->value.choice.E_RABToBeModifiedItemBearerModInd;
{
E_RAB_ToBeModifiedItem_BearerModInd->e_RAB_ID = e_rab_modification_ind->e_rabs_tobemodified[i].e_rab_id;
E_RAB_ToBeModifiedItem_BearerModInd->transportLayerAddress.size = e_rab_modification_ind->e_rabs_tobemodified[i].eNB_addr.length/8;
E_RAB_ToBeModifiedItem_BearerModInd->transportLayerAddress.bits_unused = e_rab_modification_ind->e_rabs_tobemodified[i].eNB_addr.length%8;
E_RAB_ToBeModifiedItem_BearerModInd->transportLayerAddress.buf = calloc(1, E_RAB_ToBeModifiedItem_BearerModInd->transportLayerAddress.size);
memcpy (E_RAB_ToBeModifiedItem_BearerModInd->transportLayerAddress.buf, e_rab_modification_ind->e_rabs_tobemodified[i].eNB_addr.buffer,
E_RAB_ToBeModifiedItem_BearerModInd->transportLayerAddress.size);
INT32_TO_OCTET_STRING(e_rab_modification_ind->e_rabs_tobemodified[i].gtp_teid, &E_RAB_ToBeModifiedItem_BearerModInd->dL_GTP_TEID);
}
ASN_SEQUENCE_ADD(&ie->value.choice.E_RABToBeModifiedListBearerModInd.list, E_RAB_ToBeModifiedItem_BearerModInd_IEs);
}
ASN_SEQUENCE_ADD(&out->protocolIEs.list, ie);
//E-RABs NOT to be modified list
/*ie = (S1AP_E_RABModificationIndicationIEs_t *)calloc(1, sizeof(S1AP_E_RABModificationIndicationIEs_t));
ie->id = S1AP_ProtocolIE_ID_id_E_RABNotToBeModifiedListBearerModInd;
ie->criticality = S1AP_Criticality_reject;
//if(num_e_rabs_nottobemodified > 0) {
ie->value.present = S1AP_E_RABModificationIndicationIEs__value_PR_E_RABNotToBeModifiedListBearerModInd;
for(int i=0; i<num_e_rabs_tobemodified; i++){
E_RAB_NotToBeModifiedItem_BearerModInd_IEs = (S1AP_E_RABNotToBeModifiedItemBearerModIndIEs_t *)calloc(1,sizeof(S1AP_E_RABNotToBeModifiedItemBearerModIndIEs_t));
E_RAB_NotToBeModifiedItem_BearerModInd_IEs->id = S1AP_ProtocolIE_ID_id_E_RABNotToBeModifiedItemBearerModInd;
E_RAB_NotToBeModifiedItem_BearerModInd_IEs->criticality = S1AP_Criticality_reject;
E_RAB_NotToBeModifiedItem_BearerModInd_IEs->value.present = S1AP_E_RABNotToBeModifiedItemBearerModIndIEs__value_PR_E_RABNotToBeModifiedItemBearerModInd;
E_RAB_NotToBeModifiedItem_BearerModInd = &E_RAB_NotToBeModifiedItem_BearerModInd_IEs->value.choice.E_RABNotToBeModifiedItemBearerModInd;
{
E_RAB_NotToBeModifiedItem_BearerModInd->e_RAB_ID = 10; //e_rab_modification_ind->e_rabs_tobemodified[i].e_rab_id;
E_RAB_NotToBeModifiedItem_BearerModInd->transportLayerAddress.size = e_rab_modification_ind->e_rabs_tobemodified[i].eNB_addr.length/8;
E_RAB_NotToBeModifiedItem_BearerModInd->transportLayerAddress.bits_unused = e_rab_modification_ind->e_rabs_tobemodified[i].eNB_addr.length%8;
E_RAB_NotToBeModifiedItem_BearerModInd->transportLayerAddress.buf =
calloc(1, E_RAB_NotToBeModifiedItem_BearerModInd->transportLayerAddress.size);
memcpy (E_RAB_NotToBeModifiedItem_BearerModInd->transportLayerAddress.buf, e_rab_modification_ind->e_rabs_tobemodified[i].eNB_addr.buffer,
E_RAB_NotToBeModifiedItem_BearerModInd->transportLayerAddress.size);
//INT32_TO_OCTET_STRING(e_rab_modification_ind->e_rabs_tobemodified[i].gtp_teid, &E_RAB_NotToBeModifiedItem_BearerModInd->dL_GTP_TEID);
INT32_TO_OCTET_STRING(pseudo_gtp_teid, &E_RAB_NotToBeModifiedItem_BearerModInd->dL_GTP_TEID);
}
ASN_SEQUENCE_ADD(&ie->value.choice.E_RABNotToBeModifiedListBearerModInd.list, E_RAB_NotToBeModifiedItem_BearerModInd_IEs);
}
// }
//else{
// ie->value.present = S1AP_E_RABModificationIndicationIEs__value_PR_E_RABNotToBeModifiedListBearerModInd;
// ie->value.choice.E_RABNotToBeModifiedListBearerModInd.list.size = 0;
// } /
ASN_SEQUENCE_ADD(&out->protocolIEs.list, ie);*/
/*ie = (S1AP_E_RABModificationIndicationIEs_t *)calloc(1, sizeof(S1AP_E_RABModificationIndicationIEs_t));
ie->id = S1AP_ProtocolIE_ID_id_CSGMembershipInfo;
ie->criticality = S1AP_Criticality_reject;
ie->value.present = S1AP_E_RABModificationIndicationIEs__value_PR_CSGMembershipInfo;
ie->value.choice.CSGMembershipInfo.cSGMembershipStatus = S1AP_CSGMembershipStatus_member;
INT32_TO_BIT_STRING(CSG_id, &ie->value.choice.CSGMembershipInfo.cSG_Id);
ie->value.choice.CSGMembershipInfo.cSG_Id.bits_unused=5;
ie->value.choice.CSGMembershipInfo.cellAccessMode = S1AP_CellAccessMode_hybrid;
ASN_SEQUENCE_ADD(&out->protocolIEs.list, ie);*/
if (s1ap_eNB_encode_pdu(&pdu, &buffer, &len) < 0) {
S1AP_ERROR("Failed to encode S1 E-RAB modification indication \n");
return -1;
}
// Non UE-Associated signalling -> stream = 0
S1AP_INFO("Size of encoded message: %d \n", len);
s1ap_eNB_itti_send_sctp_data_req(s1ap_eNB_instance_p->instance,
ue_context_p->mme_ref->assoc_id, buffer,
len, ue_context_p->tx_stream);
//s1ap_eNB_itti_send_sctp_data_req(s1ap_eNB_instance_p->instance, ue_context_p->mme_ref->assoc_id, buffer, len, 0);
return ret;
}