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open5gs/src/sgw/sgw-context.h

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/*
* 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/>.
*/
#ifndef SGW_CONTEXT_H
#define SGW_CONTEXT_H
#include "ogs-gtp.h"
#include "ogs-app.h"
#ifdef __cplusplus
extern "C" {
#endif
extern int __sgw_log_domain;
#undef OGS_LOG_DOMAIN
#define OGS_LOG_DOMAIN __sgw_log_domain
typedef struct sgw_tunnel_s sgw_tunnel_t;
typedef struct sgw_context_s {
uint32_t gtpc_port; /* Default GTPC port */
uint32_t gtpu_port; /* Default GTPU port */
ogs_list_t gtpc_list; /* SGW GTPC IPv4 Server List */
ogs_list_t gtpc_list6; /* SGW GTPC IPv6 Server List */
ogs_sock_t *gtpc_sock; /* SGW GTPC IPv4 Socket */
ogs_sock_t *gtpc_sock6; /* SGW GTPC IPv6 Socket */
ogs_sockaddr_t *gtpc_addr; /* SGW GTPC IPv4 Address */
ogs_sockaddr_t *gtpc_addr6; /* SGW GTPC IPv6 Address */
ogs_list_t gtpu_list; /* SGW GTPU IPv4 Server List */
ogs_list_t gtpu_list6; /* SGW GTPU IPv6 Server List */
ogs_list_t adv_gtpu_list; /* Advertised SGW GTPU IPv4 Server List */
ogs_list_t adv_gtpu_list6; /* Advertised SGW GTPU IPv6 Server List */
/* Hashtable (SGW GTPU : Advertised SGW GTPU) IPv4 */
ogs_hash_t *adv_gtpu_hash;
/* Hashtable (SGW GTPU : Advertised SGW GTPU) IPv6 */
ogs_hash_t *adv_gtpu_hash6;
ogs_sock_t *gtpu_sock; /* SGW GTPU IPv4 Socket */
ogs_sock_t *gtpu_sock6; /* SGW GTPU IPv6 Socket */
ogs_sockaddr_t *gtpu_addr; /* SGW GTPU IPv4 Address */
ogs_sockaddr_t *gtpu_addr6; /* SGW GTPU IPv6 Address */
ogs_queue_t *queue; /* Queue for processing SGW control */
ogs_timer_mgr_t *timer_mgr; /* Timer Manager */
ogs_pollset_t *pollset; /* Poll Set for I/O Multiplexing */
ogs_list_t mme_s11_list; /* MME GTPC Node List */
ogs_list_t pgw_s5c_list; /* PGW GTPC Node List */
ogs_list_t enb_s1u_list; /* eNB GTPU Node List */
ogs_list_t pgw_s5u_list; /* PGW GTPU Node List */
ogs_hash_t *imsi_ue_hash; /* hash table (IMSI : SGW_UE) */
ogs_list_t sgw_ue_list; /* SGW_UE List */
} sgw_context_t;
typedef struct sgw_ue_s {
ogs_lnode_t lnode;
uint32_t sgw_s11_teid; /* SGW-S11-TEID is derived from INDEX */
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];
#define SGW_S1U_INACTIVE 0x0001
#define SGW_DL_NOTI_SENT 0x0002
#define SGW_GET_UE_STATE(__uE) ((__uE)->state)
#define SGW_SET_UE_STATE(__uE,__sTATE) ((__uE)->state |= (__sTATE))
#define SGW_RESET_UE_STATE(__uE, __sTATE) ((__uE)->state &= ~(__sTATE))
uint32_t state;
ogs_list_t sess_list;
ogs_gtp_node_t *gnode;
} sgw_ue_t;
typedef struct sgw_sess_s {
ogs_lnode_t lnode; /* A node of list_t */
/*
* SGW-S5C-TEID = INDEX | 0x80000000
* INDEX = SGW-S5C-TEID & ~0x80000000
*/
#define SGW_S5C_TEID_TO_INDEX(__iNDEX) (__iNDEX & ~0x80000000)
#define SGW_S5C_INDEX_TO_TEID(__iNDEX) (__iNDEX | 0x80000000)
uint32_t sgw_s5c_teid; /* SGW-S5C-TEID is derived from INDEX */
uint32_t pgw_s5c_teid; /* PGW-S5C-TEID is received from PGW */
/* APN Configuration */
ogs_pdn_t pdn;
ogs_list_t bearer_list;
/* Related Context */
ogs_gtp_node_t *gnode;
sgw_ue_t *sgw_ue;
} sgw_sess_t;
typedef struct sgw_bearer_s {
ogs_lnode_t lnode;
uint8_t ebi;
/* User-Lication-Info */
ogs_eps_tai_t tai;
ogs_e_cgi_t e_cgi;
/* Pkts which will be buffered in case of UE-IDLE */
uint32_t num_buffered_pkt;
#define MAX_NUM_OF_PACKET_BUFFER 512
ogs_pkbuf_t* buffered_pkts[MAX_NUM_OF_PACKET_BUFFER];
ogs_list_t tunnel_list;
sgw_sess_t *sess;
sgw_ue_t *sgw_ue;
} sgw_bearer_t;
typedef struct sgw_tunnel_s {
ogs_lnode_t lnode;
uint8_t interface_type;
uint32_t local_teid;
uint32_t remote_teid;
/* Related Context */
sgw_bearer_t *bearer;
ogs_gtp_node_t *gnode;
} sgw_tunnel_t;
void sgw_context_init(void);
void sgw_context_final(void);
sgw_context_t *sgw_self(void);
int sgw_context_parse_config(void);
sgw_ue_t *sgw_ue_add_by_message(ogs_gtp_message_t *message);
sgw_ue_t *sgw_ue_find_by_imsi(uint8_t *imsi, int imsi_len);
sgw_ue_t *sgw_ue_find_by_imsi_bcd(char *imsi_bcd);
sgw_ue_t *sgw_ue_find_by_teid(uint32_t teid);
sgw_ue_t *sgw_ue_add(uint8_t *imsi, int imsi_len);
int sgw_ue_remove(sgw_ue_t *sgw_ue);
void sgw_ue_remove_all(void);
sgw_sess_t *sgw_sess_add(sgw_ue_t *sgw_ue, char *apn, uint8_t ebi);
int sgw_sess_remove(sgw_sess_t *sess);
void sgw_sess_remove_all(sgw_ue_t *sgw_ue);
sgw_sess_t *sgw_sess_find_by_apn(sgw_ue_t *sgw_ue, char *apn);
sgw_sess_t *sgw_sess_find_by_ebi(sgw_ue_t *sgw_ue, uint8_t ebi);
sgw_sess_t *sgw_sess_find_by_teid(uint32_t teid);
sgw_sess_t *sgw_sess_first(sgw_ue_t *sgw_ue);
sgw_sess_t *sgw_sess_next(sgw_sess_t *sess);
sgw_bearer_t *sgw_bearer_add(sgw_sess_t *sess);
int sgw_bearer_remove(sgw_bearer_t *bearer);
void sgw_bearer_remove_all(sgw_sess_t *sess);
sgw_bearer_t *sgw_bearer_find_by_sgw_s5u_teid(
uint32_t sgw_s5u_teid);
sgw_bearer_t *sgw_bearer_find_by_sess_ebi(
sgw_sess_t *sess, uint8_t ebi);
sgw_bearer_t *sgw_bearer_find_by_ue_ebi(
sgw_ue_t *sgw_ue, uint8_t ebi);
sgw_bearer_t *sgw_default_bearer_in_sess(sgw_sess_t *sess);
sgw_bearer_t *sgw_bearer_first(sgw_sess_t *sess);
sgw_bearer_t *sgw_bearer_next(sgw_bearer_t *bearer);
sgw_tunnel_t *sgw_tunnel_add(
sgw_bearer_t *bearer, uint8_t interface_type);
int sgw_tunnel_remove(sgw_tunnel_t *tunnel);
void sgw_tunnel_remove_all(sgw_bearer_t *bearer);
sgw_tunnel_t *sgw_tunnel_find_by_teid(uint32_t teid);
sgw_tunnel_t *sgw_tunnel_find_by_interface_type(
sgw_bearer_t *bearer, uint8_t interface_type);
sgw_tunnel_t *sgw_s1u_tunnel_in_bearer(sgw_bearer_t *bearer);
sgw_tunnel_t *sgw_s5u_tunnel_in_bearer(sgw_bearer_t *bearer);
sgw_tunnel_t *sgw_tunnel_first(sgw_bearer_t *bearer);
sgw_tunnel_t *sgw_tunnel_next(sgw_tunnel_t *tunnel);
#ifdef __cplusplus
}
#endif
#endif /* SGW_CONTEXT_H */
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