116 lines
3.2 KiB
C
116 lines
3.2 KiB
C
/*
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* (C) 2021-2022 by sysmocom - s.f.m.c. GmbH <info@sysmocom.de>
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* All Rights Reserved.
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*
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* Author: Neels Janosch Hofmeyr <nhofmeyr@sysmocom.de>
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*
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* SPDX-License-Identifier: GPL-2.0+
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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 General Public License as published by
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* the Free Software Foundation; either version 2 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 <http://www.gnu.org/licenses/>.
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*
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*/
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#pragma once
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#include <stdint.h>
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#include <osmocom/core/hashtable.h>
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#include <osmocom/core/use_count.h>
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#include <osmocom/pfcp/pfcp_msg.h>
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struct osmo_fsm_inst;
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struct osmo_pfcp_msg;
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struct up_peer;
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enum up_session_fsm_event {
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UP_SESSION_EV_RX_SESSION_EST_REQ,
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UP_SESSION_EV_RX_SESSION_MOD_REQ,
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UP_SESSION_EV_RX_SESSION_DEL_REQ,
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UP_SESSION_EV_USE_COUNT_ZERO,
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};
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struct up_session {
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struct hlist_node node_by_up_seid;
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struct hlist_node node_by_cp_seid;
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struct osmo_fsm_inst *fi;
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/* backpointer */
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struct up_peer *up_peer;
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struct osmo_pfcp_ie_f_seid cp_f_seid;
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uint64_t up_seid;
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struct osmo_use_count use_count;
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struct osmo_use_count_entry use_count_buf[8];
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/* llist of struct pdr */
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struct llist_head pdrs;
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/* llist of struct far */
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struct llist_head fars;
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/* llist of struct chosen_f_teid */
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struct llist_head chosen_f_teids;
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/* llist of struct up_gtp_action */
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struct llist_head active_gtp_actions;
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};
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struct up_session *up_session_find_or_add(struct up_peer *peer, const struct osmo_pfcp_ie_f_seid *cp_f_seid);
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struct up_session *up_session_find_by_up_seid(struct up_peer *peer, uint64_t up_seid);
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struct up_session *up_session_find_by_cp_f_seid(struct up_peer *peer, const struct osmo_pfcp_ie_f_seid *cp_f_seid);
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struct up_session *up_session_find_by_local_teid(struct up_peer *peer, uint32_t teid);
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void up_session_set_msg_ctx(struct up_session *session, struct osmo_pfcp_msg *m);
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char *up_session_gtp_status(struct up_session *session);
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bool up_session_is_active(struct up_session *session);
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bool up_session_is_fully_active(struct up_session *session, int *active_p, int *inactive_p);
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int up_session_discard(struct up_session *session);
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int up_session_to_str_buf(char *buf, size_t buflen, struct up_session *session);
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char *up_session_to_str_c(void *ctx, struct up_session *session);
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struct pdr {
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struct llist_head entry;
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struct up_session *session;
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struct osmo_pfcp_ie_create_pdr desc;
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struct osmo_pfcp_ie_f_teid *local_f_teid;
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struct osmo_pfcp_ie_f_teid _local_f_teid_buf;
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struct far *far;
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bool rx_decaps;
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bool forw_encaps;
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bool access_to_core;
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bool core_to_access;
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struct pdr *reverse_pdr;
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bool active;
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char *inactive_reason;
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};
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int pdr_to_str_buf(char *buf, size_t buflen, const struct pdr *pdr);
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char *pdr_to_str_c(void *ctx, const struct pdr *pdr);
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struct far {
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struct llist_head entry;
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struct up_session *session;
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struct osmo_pfcp_ie_create_far desc;
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bool active;
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};
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