137 lines
3.1 KiB
C
137 lines
3.1 KiB
C
/*
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* Copyright (C) 2019 by Sukchan Lee <acetcom@gmail.com>
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*
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* This file is part of Open5GS.
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Affero 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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*
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* This program 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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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <https://www.gnu.org/licenses/>.
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*/
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#include "pgw-context.h"
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#include "pgw-event.h"
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#include "pgw-sm.h"
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#include "pgw-fd-path.h"
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static ogs_thread_t *thread;
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static void pgw_main(void *data);
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static int initialized = 0;
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int pgw_initialize()
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{
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int rv;
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pgw_context_init();
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pgw_event_init();
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rv = ogs_gtp_xact_init(pgw_self()->timer_mgr, 512);
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if (rv != OGS_OK) return rv;
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rv = pgw_context_parse_config();
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if (rv != OGS_OK) return rv;
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rv = ogs_log_config_domain(
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ogs_config()->logger.domain, ogs_config()->logger.level);
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if (rv != OGS_OK) return rv;
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rv = pgw_ue_pool_generate();
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if (rv != OGS_OK) return rv;
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rv = pgw_fd_init();
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if (rv != 0) return OGS_ERROR;
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thread = ogs_thread_create(pgw_main, NULL);
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if (!thread) return OGS_ERROR;
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initialized = 1;
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return OGS_OK;
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}
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void pgw_terminate(void)
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{
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if (!initialized) return;
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pgw_event_term();
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ogs_thread_destroy(thread);
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pgw_fd_final();
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pgw_context_final();
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ogs_gtp_xact_final();
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pgw_event_final();
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}
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static void pgw_main(void *data)
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{
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ogs_fsm_t pgw_sm;
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int rv;
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ogs_fsm_create(&pgw_sm, pgw_state_initial, pgw_state_final);
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ogs_fsm_init(&pgw_sm, 0);
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for ( ;; ) {
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ogs_pollset_poll(pgw_self()->pollset,
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ogs_timer_mgr_next(pgw_self()->timer_mgr));
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/* Process the MESSAGE FIRST.
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*
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* For example, if UE Context Release Complete is received,
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* the MME_TIMER_UE_CONTEXT_RELEASE is first stopped */
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for ( ;; ) {
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pgw_event_t *e = NULL;
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rv = ogs_queue_trypop(pgw_self()->queue, (void**)&e);
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ogs_assert(rv != OGS_ERROR);
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if (rv == OGS_DONE)
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goto done;
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if (rv == OGS_RETRY)
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break;
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ogs_assert(e);
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ogs_fsm_dispatch(&pgw_sm, e);
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pgw_event_free(e);
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}
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ogs_timer_mgr_expire(pgw_self()->timer_mgr);
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/* AND THEN, process the TIMER. */
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for ( ;; ) {
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pgw_event_t *e = NULL;
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rv = ogs_queue_trypop(pgw_self()->queue, (void**)&e);
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ogs_assert(rv != OGS_ERROR);
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if (rv == OGS_DONE)
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goto done;
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if (rv == OGS_RETRY)
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break;
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ogs_assert(e);
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ogs_fsm_dispatch(&pgw_sm, e);
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pgw_event_free(e);
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}
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}
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done:
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ogs_fsm_fini(&pgw_sm, 0);
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ogs_fsm_delete(&pgw_sm);
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}
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