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/*
* Copyright (C) 2019-2023 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/>.
*/
#ifndef SGWC_CONTEXT_H
#define SGWC_CONTEXT_H
#include "ogs-app.h"
#include "ogs-gtp.h"
#include "ogs-pfcp.h"
#include "timer.h"
#include "sgwc-sm.h"
#ifdef __cplusplus
extern "C" {
#endif
extern int __sgwc_log_domain;
#undef OGS_LOG_DOMAIN
#define OGS_LOG_DOMAIN __sgwc_log_domain
typedef struct sgwc_tunnel_s sgwc_tunnel_t;
typedef struct sgwc_context_s {
ogs_list_t mme_s11_list; /* MME GTPC Node List */
ogs_list_t pgw_s5c_list; /* PGW GTPC Node List */
ogs_hash_t *imsi_ue_hash; /* hash table (IMSI : SGW_UE) */
ogs_hash_t *sgw_s11_teid_hash; /* hash table (SGW-S11-TEID : SGW_UE) */
ogs_hash_t *sgwc_sxa_seid_hash; /* hash table (SGWC-SXA-SEID : Session) */
ogs_list_t sgw_ue_list; /* SGW_UE List */
} sgwc_context_t;
typedef struct sgwc_ue_s {
ogs_lnode_t lnode;
ogs_pool_id_t id;
ogs_pool_id_t *sgw_s11_teid_node; /* A node of SGW-S11-TEID */
uint32_t sgw_s11_teid; /* SGW-S11-TEID is derived from NODE */
uint32_t mme_s11_teid; /* MME-S11-TEID is received from MME */
/* UE identity */
uint8_t imsi[OGS_MAX_IMSI_LEN];
int imsi_len;
char imsi_bcd[OGS_MAX_IMSI_BCD_LEN+1];
/* User-Location-Info */
bool uli_presence;
ogs_eps_tai_t e_tai;
ogs_e_cgi_t e_cgi;
ogs_list_t sess_list;
ogs_gtp_node_t *gnode;
} sgwc_ue_t;
#define SGWC_SESS(pfcp_sess) ogs_container_of(pfcp_sess, sgwc_sess_t, pfcp)
typedef struct sgwc_sess_s {
ogs_lnode_t lnode; /* A node of list_t */
ogs_pool_id_t id;
ogs_pool_id_t *sgwc_sxa_seid_node; /* A node of SGWC-SXA-SEID */
ogs_pfcp_sess_t pfcp; /* PFCP session context */
uint32_t sgw_s5c_teid; /* SGW-S5C-TEID is derived from NODE */
uint32_t pgw_s5c_teid; /* PGW-S5C-TEID is received from PGW */
uint64_t sgwc_sxa_seid; /* SGW-C SEID is dervied from NODE */
uint64_t sgwu_sxa_seid; /* SGW-U SEID is received from Peer */
/* APN Configuration */
ogs_session_t session;
ogs_list_t bearer_list;
/* Related Context */
ogs_gtp_node_t *gnode;
ogs_pfcp_node_t *pfcp_node;
ogs_pool_id_t sgwc_ue_id;
} sgwc_sess_t;
typedef struct sgwc_bearer_s {
ogs_lnode_t lnode;
ogs_pool_id_t id;
ogs_lnode_t to_modify_node;
uint8_t ebi;
ogs_list_t tunnel_list;
ogs_pool_id_t sess_id;
ogs_pool_id_t sgwc_ue_id;
} sgwc_bearer_t;
typedef struct sgwc_tunnel_s {
ogs_lnode_t lnode;
ogs_pool_id_t id;
uint8_t interface_type;
ogs_pfcp_pdr_t *pdr;
ogs_pfcp_far_t *far;
uint32_t local_teid;
ogs_sockaddr_t *local_addr;
ogs_sockaddr_t *local_addr6;
uint32_t remote_teid;
ogs_ip_t remote_ip;
/* Related Context */
ogs_pool_id_t bearer_id;
ogs_gtp_node_t *gnode;
} sgwc_tunnel_t;
void sgwc_context_init(void);
void sgwc_context_final(void);
sgwc_context_t *sgwc_self(void);
int sgwc_context_parse_config(void);
sgwc_ue_t *sgwc_ue_add_by_message(ogs_gtp2_message_t *message);
sgwc_ue_t *sgwc_ue_find_by_imsi(uint8_t *imsi, int imsi_len);
sgwc_ue_t *sgwc_ue_find_by_imsi_bcd(char *imsi_bcd);
sgwc_ue_t *sgwc_ue_find_by_teid(uint32_t teid);
sgwc_ue_t *sgwc_ue_add(uint8_t *imsi, int imsi_len);
int sgwc_ue_remove(sgwc_ue_t *sgwc_ue);
void sgwc_ue_remove_all(void);
sgwc_ue_t *sgwc_ue_find_by_id(ogs_pool_id_t id);
sgwc_sess_t *sgwc_sess_add(sgwc_ue_t *sgwc_ue, char *apn);
void sgwc_sess_select_sgwu(sgwc_sess_t *sess);
int sgwc_sess_remove(sgwc_sess_t *sess);
void sgwc_sess_remove_all(sgwc_ue_t *sgwc_ue);
sgwc_sess_t *sgwc_sess_find_by_teid(uint32_t teid);
sgwc_sess_t *sgwc_sess_find_by_seid(uint64_t seid);
sgwc_sess_t *sgwc_sess_find_by_apn(sgwc_ue_t *sgwc_ue, char *apn);
sgwc_sess_t *sgwc_sess_find_by_ebi(sgwc_ue_t *sgwc_ue, uint8_t ebi);
sgwc_sess_t *sgwc_sess_find_by_id(ogs_pool_id_t id);
#define SGWC_SESSION_SYNC_DONE(__sGWC, __tYPE, __fLAGS) \
(sgwc_sess_pfcp_xact_count(__sGWC, __tYPE, __fLAGS) == 0)
int sgwc_sess_pfcp_xact_count(
sgwc_ue_t *sgwc_ue, uint8_t pfcp_type, uint64_t modify_flags);
sgwc_bearer_t *sgwc_bearer_add(sgwc_sess_t *sess);
int sgwc_bearer_remove(sgwc_bearer_t *bearer);
void sgwc_bearer_remove_all(sgwc_sess_t *sess);
sgwc_bearer_t *sgwc_bearer_find_by_sess_ebi(
sgwc_sess_t *sess, uint8_t ebi);
sgwc_bearer_t *sgwc_bearer_find_by_ue_ebi(
sgwc_ue_t *sgwc_ue, uint8_t ebi);
sgwc_bearer_t *sgwc_default_bearer_in_sess(sgwc_sess_t *sess);
sgwc_bearer_t *sgwc_bearer_find_by_id(ogs_pool_id_t id);
sgwc_tunnel_t *sgwc_tunnel_add(
sgwc_bearer_t *bearer, uint8_t interface_type);
int sgwc_tunnel_remove(sgwc_tunnel_t *tunnel);
void sgwc_tunnel_remove_all(sgwc_bearer_t *bearer);
sgwc_tunnel_t *sgwc_tunnel_find_by_teid(sgwc_ue_t *sgwc_ue, uint32_t teid);
sgwc_tunnel_t *sgwc_tunnel_find_by_interface_type(
sgwc_bearer_t *bearer, uint8_t interface_type);
sgwc_tunnel_t *sgwc_tunnel_find_by_pdr_id(
sgwc_sess_t *sess, ogs_pfcp_pdr_id_t pdr_id);
sgwc_tunnel_t *sgwc_tunnel_find_by_far_id(
sgwc_sess_t *sess, ogs_pfcp_far_id_t far_id);
sgwc_tunnel_t *sgwc_dl_tunnel_in_bearer(sgwc_bearer_t *bearer);
sgwc_tunnel_t *sgwc_ul_tunnel_in_bearer(sgwc_bearer_t *bearer);
sgwc_tunnel_t *sgwc_tunnel_find_by_id(ogs_pool_id_t id);
#ifdef __cplusplus
}
#endif
#endif /* SGWC_CONTEXT_H */
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