Cedric Roux
9456fe584a
This commit introduces X2AP timers (t_reloc_prep, tx2_reloc_overall). You need to set the values in the configuration file. X2AP can be enabled or disabled in the configuration file too (disabled by default). Some deadcode was removed.
106 lines
3.4 KiB
C
106 lines
3.4 KiB
C
/*
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* Licensed to the OpenAirInterface (OAI) Software Alliance under one or more
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* contributor license agreements. See the NOTICE file distributed with
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* this work for additional information regarding copyright ownership.
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* The OpenAirInterface Software Alliance licenses this file to You under
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* the OAI Public License, Version 1.1 (the "License"); you may not use this file
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* except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.openairinterface.org/?page_id=698
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*-------------------------------------------------------------------------------
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* For more information about the OpenAirInterface (OAI) Software Alliance:
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* contact@openairinterface.org
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*/
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#include "x2ap_timers.h"
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#include "assertions.h"
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#include "PHY/defs_common.h" /* TODO: try to not include this */
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#include "x2ap_messages_types.h"
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#include "x2ap_eNB_defs.h"
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#include "x2ap_ids.h"
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#include "x2ap_eNB_management_procedures.h"
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#include "x2ap_eNB_generate_messages.h"
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void x2ap_timers_init(x2ap_timers_t *t, int t_reloc_prep, int tx2_reloc_overall)
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{
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t->tti = 0;
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t->t_reloc_prep = t_reloc_prep;
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t->tx2_reloc_overall = tx2_reloc_overall;
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}
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void x2ap_check_timers(instance_t instance)
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{
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x2ap_eNB_instance_t *instance_p;
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x2ap_timers_t *t;
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x2ap_id_manager *m;
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int i;
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x2ap_handover_cancel_cause_t cause;
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void *target;
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MessageDef *msg;
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int x2_ongoing;
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instance_p = x2ap_eNB_get_instance(instance);
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DevAssert(instance_p != NULL);
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t = &instance_p->timers;
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m = &instance_p->id_manager;
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/* increment subframe count */
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t->tti++;
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x2_ongoing = 0;
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for (i = 0; i < X2AP_MAX_IDS; i++) {
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if (m->ids[i].rnti == -1) continue;
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x2_ongoing++;
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if (m->ids[i].state == X2ID_STATE_SOURCE_PREPARE &&
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t->tti > m->ids[i].t_reloc_prep_start + t->t_reloc_prep) {
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LOG_I(X2AP, "X2 timeout reloc prep\n");
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/* t_reloc_prep timed out */
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cause = X2AP_T_RELOC_PREP_TIMEOUT;
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goto timeout;
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}
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if (m->ids[i].state == X2ID_STATE_SOURCE_OVERALL &&
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t->tti > m->ids[i].tx2_reloc_overall_start + t->tx2_reloc_overall) {
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LOG_I(X2AP, "X2 timeout reloc overall\n");
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/* tx2_reloc_overall timed out */
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cause = X2AP_TX2_RELOC_OVERALL_TIMEOUT;
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goto timeout;
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}
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/* no timeout -> check next UE */
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continue;
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timeout:
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/* inform target about timeout */
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target = x2ap_id_get_target(m, i);
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x2ap_eNB_generate_x2_handover_cancel(instance_p, target, i, cause);
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/* inform RRC of cancellation */
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msg = itti_alloc_new_message(TASK_X2AP, X2AP_HANDOVER_CANCEL);
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X2AP_HANDOVER_CANCEL(msg).rnti = x2ap_id_get_rnti(m, i);
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X2AP_HANDOVER_CANCEL(msg).cause = cause;
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itti_send_msg_to_task(TASK_RRC_ENB, instance_p->instance, msg);
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/* remove UE from X2AP */
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x2ap_release_id(m, i);
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}
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if (x2_ongoing && t->tti % 1000 == 0)
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LOG_I(X2AP, "X2 has %d process ongoing\n", x2_ongoing);
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}
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uint64_t x2ap_timer_get_tti(x2ap_timers_t *t)
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{
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return t->tti;
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}
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