Initial proposal CUPS using PFCP

2026-05-01 21:00:19 +00:00 · 2020-04-26 15:36:05 -04:00 · 2020-04-26 15:36:05 -04:00 · ae75f43a88
commit ae75f43a88
parent 37a69e6332
206 changed files with 21116 additions and 3406 deletions
--- a/src/upf/init.c
+++ b/src/upf/init.c
@ -0,0 +1,134 @@
+/*
+ * Copyright (C) 2019 by Sukchan Lee <acetcom@gmail.com>
+ *
+ * This file is part of Open5GS.
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program 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 this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#include "context.h"
+#include "event.h"
+#include "upf-sm.h"
+
+static ogs_thread_t *thread;
+static void upf_main(void *data);
+
+static int initialized = 0;
+
+int upf_initialize()
+{
+    int rv;
+
+    ogs_pfcp_context_init(OGS_MAX_NUM_OF_GTPU_RESOURCE);
+    upf_context_init();
+    upf_event_init();
+
+    rv = ogs_pfcp_xact_init(upf_self()->timer_mgr, 512);
+    if (rv != OGS_OK) return rv;
+
+    rv = ogs_pfcp_context_parse_config("upf", "smf");
+    if (rv != OGS_OK) return rv;
+
+    rv = upf_context_parse_config();
+    if (rv != OGS_OK) return rv;
+
+    rv = ogs_log_config_domain(
+            ogs_config()->logger.domain, ogs_config()->logger.level);
+    if (rv != OGS_OK) return rv;
+
+    rv = ogs_pfcp_ue_pool_generate();
+    if (rv != OGS_OK) return rv;
+
+    thread = ogs_thread_create(upf_main, NULL);
+    if (!thread) return OGS_ERROR;
+
+    initialized = 1;
+
+    return OGS_OK;
+}
+
+void upf_terminate(void)
+{
+    if (!initialized) return;
+
+    upf_event_term();
+
+    ogs_thread_destroy(thread);
+
+    upf_context_final();
+    ogs_pfcp_context_final();
+
+    ogs_pfcp_xact_final();
+
+    upf_event_final();
+}
+
+static void upf_main(void *data)
+{
+    ogs_fsm_t upf_sm;
+    int rv;
+
+    ogs_fsm_create(&upf_sm, upf_state_initial, upf_state_final);
+    ogs_fsm_init(&upf_sm, 0);
+
+    for ( ;; ) {
+        ogs_pollset_poll(upf_self()->pollset,
+                ogs_timer_mgr_next(upf_self()->timer_mgr));
+
+        /* Process the MESSAGE FIRST.
+         *
+         * For example, if UE Context Release Complete is received,
+         * the MME_TIMER_UE_CONTEXT_RELEASE is first stopped */
+        for ( ;; ) {
+            upf_event_t *e = NULL;
+
+            rv = ogs_queue_trypop(upf_self()->queue, (void**)&e);
+            ogs_assert(rv != OGS_ERROR);
+
+            if (rv == OGS_DONE)
+                goto done;
+
+            if (rv == OGS_RETRY)
+                break;
+
+            ogs_assert(e);
+            ogs_fsm_dispatch(&upf_sm, e);
+            upf_event_free(e);
+        }
+
+        ogs_timer_mgr_expire(upf_self()->timer_mgr);
+
+        /* AND THEN, process the TIMER. */
+        for ( ;; ) {
+            upf_event_t *e = NULL;
+
+            rv = ogs_queue_trypop(upf_self()->queue, (void**)&e);
+            ogs_assert(rv != OGS_ERROR);
+
+            if (rv == OGS_DONE)
+                goto done;
+
+            if (rv == OGS_RETRY)
+                break;
+
+            ogs_assert(e);
+            ogs_fsm_dispatch(&upf_sm, e);
+            upf_event_free(e);
+        }
+    }
+done:
+
+    ogs_fsm_fini(&upf_sm, 0);
+    ogs_fsm_delete(&upf_sm);
+}