Commit 569ab7de authored by gauthier's avatar gauthier

S1AP UE context release

git-svn-id: http://svn.eurecom.fr/openair4G/trunk@6316 818b1a75-f10b-46b9-bf7c-635c3b92a50f
parent 1c50feeb
/*******************************************************************************
OpenAirInterface
Copyright(c) 1999 - 2014 Eurecom
OpenAirInterface is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
OpenAirInterface is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with OpenAirInterface.The full GNU General Public License is
included in this distribution in the file called "COPYING". If not,
see <http://www.gnu.org/licenses/>.
Contact Information
OpenAirInterface Admin: openair_admin@eurecom.fr
OpenAirInterface Tech : openair_tech@eurecom.fr
OpenAirInterface Dev : openair4g-devel@eurecom.fr
Address : Eurecom, Compus SophiaTech 450, route des chappes, 06451 Biot, France.
*******************************************************************************/
#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_ies_defs.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 "s1ap_eNB_context_management_procedures.h"
int s1ap_ue_context_release_complete(instance_t instance,
s1ap_ue_release_complete_t *ue_release_complete_p)
{
s1ap_eNB_instance_t *s1ap_eNB_instance_p = NULL;
struct s1ap_eNB_ue_context_s *ue_context_p = NULL;
S1ap_UEContextReleaseCompleteIEs_t *ue_ctxt_release_complete_ies_p = NULL;
s1ap_message message;
uint8_t *buffer;
uint32_t length;
int ret = -1;
/* Retrieve the S1AP eNB instance associated with Mod_id */
s1ap_eNB_instance_p = s1ap_eNB_get_instance(instance);
DevAssert(ue_release_complete_p != NULL);
DevAssert(s1ap_eNB_instance_p != NULL);
if ((ue_context_p = s1ap_eNB_get_ue_context(s1ap_eNB_instance_p,
ue_release_complete_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_release_complete_p->eNB_ue_s1ap_id);
return -1;
}
/* Prepare the S1AP message to encode */
memset(&message, 0, sizeof(s1ap_message));
message.direction = S1AP_PDU_PR_successfulOutcome;
message.procedureCode = S1ap_ProcedureCode_id_UEContextRelease;
//message.criticality = S1ap_Criticality_reject;
ue_ctxt_release_complete_ies_p = &message.msg.s1ap_UEContextReleaseCompleteIEs;
ue_ctxt_release_complete_ies_p->eNB_UE_S1AP_ID = ue_release_complete_p->eNB_ue_s1ap_id;
ue_ctxt_release_complete_ies_p->mme_ue_s1ap_id = ue_context_p->mme_ue_s1ap_id;
//ue_ctxt_release_complete_ies_p->criticalityDiagnostics
//ue_ctxt_release_complete_ies_p->presenceMask
if (s1ap_eNB_encode_pdu(&message, &buffer, &length) < 0) {
/* Encode procedure has failed... */
S1AP_ERROR("Failed to encode UE context release complete\n");
return -1;
}
/* 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->stream);
s1ap_eNB_itti_send_sctp_close_association(s1ap_eNB_instance_p->instance,
ue_context_p->mme_ref->assoc_id);
// release UE context
struct s1ap_eNB_ue_context_s *ue_context2_p = NULL;
if ((ue_context2_p = RB_REMOVE(s1ap_ue_map, &s1ap_eNB_instance_p->s1ap_ue_head, ue_context_p))
== NULL)
{
s1ap_eNB_free_ue_context(ue_context2_p);
}
return ret;
}
int s1ap_ue_context_release_req(instance_t instance,
s1ap_ue_release_req_t *ue_release_req_p)
{
s1ap_eNB_instance_t *s1ap_eNB_instance_p = NULL;
struct s1ap_eNB_ue_context_s *ue_context_p = NULL;
S1ap_UEContextReleaseRequestIEs_t *ue_ctxt_release_request_ies_p = NULL;
s1ap_message message;
uint8_t *buffer = NULL;
uint32_t length;
/* Retrieve the S1AP eNB instance associated with Mod_id */
s1ap_eNB_instance_p = s1ap_eNB_get_instance(instance);
DevAssert(ue_release_req_p != NULL);
DevAssert(s1ap_eNB_instance_p != NULL);
if ((ue_context_p = s1ap_eNB_get_ue_context(s1ap_eNB_instance_p,
ue_release_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: %u\n",
ue_release_req_p->eNB_ue_s1ap_id);
return -1;
}
/* Prepare the S1AP message to encode */
memset(&message, 0, sizeof(s1ap_message));
message.direction = S1AP_PDU_PR_initiatingMessage;
message.procedureCode = S1ap_ProcedureCode_id_UEContextReleaseRequest;
//message.criticality = S1ap_Criticality_reject;
ue_ctxt_release_request_ies_p = &message.msg.s1ap_UEContextReleaseRequestIEs;
ue_ctxt_release_request_ies_p->eNB_UE_S1AP_ID = ue_release_req_p->eNB_ue_s1ap_id;
ue_ctxt_release_request_ies_p->mme_ue_s1ap_id = ue_context_p->mme_ue_s1ap_id;
switch (ue_release_req_p->cause) {
case S1AP_CAUSE_NOTHING:
ue_ctxt_release_request_ies_p->cause.present = S1ap_Cause_PR_NOTHING;
break;
case S1AP_CAUSE_RADIO_NETWORK:
ue_ctxt_release_request_ies_p->cause.present = S1ap_Cause_PR_radioNetwork;
ue_ctxt_release_request_ies_p->cause.choice.radioNetwork = ue_release_req_p->cause_value;
break;
case S1AP_CAUSE_TRANSPORT:
ue_ctxt_release_request_ies_p->cause.present = S1ap_Cause_PR_transport;
ue_ctxt_release_request_ies_p->cause.choice.transport = ue_release_req_p->cause_value;
break;
case S1AP_CAUSE_NAS:
ue_ctxt_release_request_ies_p->cause.present = S1ap_Cause_PR_nas;
ue_ctxt_release_request_ies_p->cause.choice.nas = ue_release_req_p->cause_value;
break;
case S1AP_CAUSE_PROTOCOL:
ue_ctxt_release_request_ies_p->cause.present = S1ap_Cause_PR_protocol;
ue_ctxt_release_request_ies_p->cause.choice.protocol = ue_release_req_p->cause_value;
break;
case S1AP_CAUSE_MISC:
default:
ue_ctxt_release_request_ies_p->cause.present = S1ap_Cause_PR_misc;
ue_ctxt_release_request_ies_p->cause.choice.misc = ue_release_req_p->cause_value;
break;
}
if (s1ap_eNB_encode_pdu(&message, &buffer, &length) < 0) {
/* Encode procedure has failed... */
S1AP_ERROR("Failed to encode UE context release complete\n");
return -1;
}
/* 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->stream);
return 0;
}
/*******************************************************************************
OpenAirInterface
Copyright(c) 1999 - 2014 Eurecom
OpenAirInterface is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
OpenAirInterface is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with OpenAirInterface.The full GNU General Public License is
included in this distribution in the file called "COPYING". If not,
see <http://www.gnu.org/licenses/>.
Contact Information
OpenAirInterface Admin: openair_admin@eurecom.fr
OpenAirInterface Tech : openair_tech@eurecom.fr
OpenAirInterface Dev : openair4g-devel@eurecom.fr
Address : Eurecom, Compus SophiaTech 450, route des chappes, 06451 Biot, France.
*******************************************************************************/
#ifndef S1AP_ENB_CONTEXT_MANAGEMENT_PROCEDURES_H_
#define S1AP_ENB_CONTEXT_MANAGEMENT_PROCEDURES_H_
int s1ap_ue_context_release_complete(instance_t instance,
s1ap_ue_release_complete_t *ue_release_complete_p);
int s1ap_ue_context_release_req(instance_t instance,
s1ap_ue_release_req_t *ue_release_req_p);
#endif /* S1AP_ENB_CONTEXT_MANAGEMENT_PROCEDURES_H_ */
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