gauthier
7b5431a62c
git-svn-id: http://svn.eurecom.fr/openair4G/trunk@7886 818b1a75-f10b-46b9-bf7c-635c3b92a50f
113 lines
3.5 KiB
C
113 lines
3.5 KiB
C
/*******************************************************************************
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OpenAirInterface
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Copyright(c) 1999 - 2014 Eurecom
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OpenAirInterface is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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OpenAirInterface is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with OpenAirInterface.The full GNU General Public License is
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included in this distribution in the file called "COPYING". If not,
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see <http://www.gnu.org/licenses/>.
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Contact Information
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OpenAirInterface Admin: openair_admin@eurecom.fr
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OpenAirInterface Tech : openair_tech@eurecom.fr
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OpenAirInterface Dev : openair4g-devel@lists.eurecom.fr
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Address : Eurecom, Compus SophiaTech 450, route des chappes, 06451 Biot, France.
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*******************************************************************************/
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/*! \file s1ap_eNB_overload.c
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* \brief s1ap procedures for overload messages within eNB
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* \author Sebastien ROUX <sebastien.roux@eurecom.fr>
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* \date 2012
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* \version 0.1
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <stdint.h>
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#include "intertask_interface.h"
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#include "s1ap_common.h"
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#include "s1ap_ies_defs.h"
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#include "s1ap_eNB_defs.h"
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#include "s1ap_eNB.h"
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#include "s1ap_eNB_ue_context.h"
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#include "s1ap_eNB_encoder.h"
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#include "s1ap_eNB_overload.h"
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#include "s1ap_eNB_management_procedures.h"
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#include "assertions.h"
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int s1ap_eNB_handle_overload_start(uint32_t assoc_id,
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uint32_t stream,
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struct s1ap_message_s *message_p)
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{
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S1ap_OverloadStartIEs_t *overload_start_p;
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s1ap_eNB_mme_data_t *mme_desc_p;
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DevAssert(message_p != NULL);
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overload_start_p = &message_p->msg.s1ap_OverloadStartIEs;
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DevCheck(overload_start_p->overloadResponse.present ==
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S1ap_OverloadResponse_PR_overloadAction,
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S1ap_OverloadResponse_PR_overloadAction, 0, 0);
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/* Non UE-associated signalling -> stream 0 */
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DevCheck(stream == 0, stream, 0, 0);
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if ((mme_desc_p = s1ap_eNB_get_MME(NULL, assoc_id, 0)) == NULL) {
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/* No MME context associated */
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return -1;
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}
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/* Mark the MME as overloaded and set the overload state according to
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* the value received.
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*/
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mme_desc_p->state = S1AP_ENB_OVERLOAD;
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mme_desc_p->overload_state =
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overload_start_p->overloadResponse.choice.overloadAction;
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return 0;
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}
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int s1ap_eNB_handle_overload_stop(uint32_t assoc_id,
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uint32_t stream,
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struct s1ap_message_s *message_p)
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{
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/* We received Overload stop message, meaning that the MME is no more
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* overloaded. This is an empty message, with only message header and no
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* Information Element.
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*/
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DevAssert(message_p != NULL);
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s1ap_eNB_mme_data_t *mme_desc_p;
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/* Non UE-associated signalling -> stream 0 */
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DevCheck(stream == 0, stream, 0, 0);
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if ((mme_desc_p = s1ap_eNB_get_MME(NULL, assoc_id, 0)) == NULL) {
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/* No MME context associated */
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return -1;
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}
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mme_desc_p->state = S1AP_ENB_STATE_CONNECTED;
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mme_desc_p->overload_state = S1AP_NO_OVERLOAD;
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return 0;
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}
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