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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 UPF_CONTEXT_H
#define UPF_CONTEXT_H
#include "upf-config.h"
#if HAVE_NET_IF_H
#include <net/if.h>
#endif
#include "ogs-gtp.h"
#include "ogs-pfcp.h"
#include "ogs-app.h"
#include "ipfw/ogs-ipfw.h"
#include "timer.h"
#include "upf-sm.h"
#include "metrics.h"
#ifdef __cplusplus
extern "C" {
#endif
extern int __upf_log_domain;
#undef OGS_LOG_DOMAIN
#define OGS_LOG_DOMAIN __upf_log_domain
struct upf_route_trie_node;
typedef struct upf_context_s {
ogs_hash_t *upf_n4_seid_hash; /* hash table (UPF-N4-SEID) */
ogs_hash_t *smf_n4_seid_hash; /* hash table (SMF-N4-SEID) */
ogs_hash_t *smf_n4_f_seid_hash; /* hash table (SMF-N4-F-SEID) */
ogs_hash_t *ipv4_hash; /* hash table (IPv4 Address) */
ogs_hash_t *ipv6_hash; /* hash table (IPv6 Address) */
/* IPv4 framed routes trie */
struct upf_route_trie_node *ipv4_framed_routes;
/* IPv6 framed routes trie */
struct upf_route_trie_node *ipv6_framed_routes;
ogs_list_t sess_list;
} upf_context_t;
/* trie mapping from IP framed routes to session. */
struct upf_route_trie_node {
struct upf_route_trie_node *left;
struct upf_route_trie_node *right;
upf_sess_t *sess;
};
/* Accounting: */
typedef struct upf_sess_urr_acc_s {
bool reporting_enabled;
ogs_timer_t *t_validity_time; /* Quota Validity Time expiration handler */
ogs_timer_t *t_time_quota; /* Time Quota expiration handler */
ogs_timer_t *t_time_threshold; /* Time Threshold expiration handler */
uint32_t time_start; /* When t_time_* started */
ogs_pfcp_urr_ur_seqn_t report_seqn; /* Next seqn to use when reporting */
uint64_t total_octets;
uint64_t ul_octets;
uint64_t dl_octets;
uint64_t total_pkts;
uint64_t ul_pkts;
uint64_t dl_pkts;
ogs_time_t time_of_first_packet;
ogs_time_t time_of_last_packet;
/* Snapshot of measurement when last report was sent: */
struct {
uint64_t total_octets;
uint64_t ul_octets;
uint64_t dl_octets;
uint64_t total_pkts;
uint64_t ul_pkts;
uint64_t dl_pkts;
ogs_time_t timestamp;
} last_report;
} upf_sess_urr_acc_t;
#define UPF_SESS(pfcp_sess) ogs_container_of(pfcp_sess, upf_sess_t, pfcp)
typedef struct upf_sess_s {
ogs_lnode_t lnode;
ogs_pool_id_t id;
ogs_pool_id_t *upf_n4_seid_node; /* A node of UPF-N4-SEID */
ogs_pfcp_sess_t pfcp;
uint64_t upf_n4_seid; /* UPF SEID is dervied from NODE */
struct {
uint64_t seid;
ogs_ip_t ip;
} smf_n4_f_seid; /* SMF SEID is received from Peer */
/* APN Configuration */
ogs_pfcp_ue_ip_t *ipv4;
ogs_pfcp_ue_ip_t *ipv6;
ogs_ipsubnet_t *ipv4_framed_routes;
ogs_ipsubnet_t *ipv6_framed_routes;
char *gx_sid; /* Gx Session ID */
ogs_pfcp_node_t *pfcp_node;
/* Accounting: */
upf_sess_urr_acc_t urr_acc[OGS_MAX_NUM_OF_URR]; /* FIXME: This probably needs to be mved to a hashtable or alike */
char *apn_dnn; /* APN/DNN Item */
} upf_sess_t;
void upf_context_init(void);
void upf_context_final(void);
upf_context_t *upf_self(void);
int upf_context_parse_config(void);
upf_sess_t *upf_sess_add_by_message(ogs_pfcp_message_t *message);
upf_sess_t *upf_sess_add(ogs_pfcp_f_seid_t *f_seid);
int upf_sess_remove(upf_sess_t *sess);
void upf_sess_remove_all(void);
upf_sess_t *upf_sess_find_by_smf_n4_seid(uint64_t seid);
upf_sess_t *upf_sess_find_by_smf_n4_f_seid(ogs_pfcp_f_seid_t *f_seid);
upf_sess_t *upf_sess_find_by_upf_n4_seid(uint64_t seid);
upf_sess_t *upf_sess_find_by_ipv4(uint32_t addr);
upf_sess_t *upf_sess_find_by_ipv6(uint32_t *addr6);
upf_sess_t *upf_sess_find_by_id(ogs_pool_id_t id);
uint8_t upf_sess_set_ue_ip(upf_sess_t *sess,
uint8_t session_type, ogs_pfcp_pdr_t *pdr);
uint8_t upf_sess_set_ue_ipv4_framed_routes(upf_sess_t *sess,
char *framed_routes[]);
uint8_t upf_sess_set_ue_ipv6_framed_routes(upf_sess_t *sess,
char *framed_routes[]);
void upf_sess_urr_acc_add(upf_sess_t *sess, ogs_pfcp_urr_t *urr, size_t size, bool is_uplink);
void upf_sess_urr_acc_fill_usage_report(upf_sess_t *sess, const ogs_pfcp_urr_t *urr,
ogs_pfcp_user_plane_report_t *report, unsigned int idx);
void upf_sess_urr_acc_snapshot(upf_sess_t *sess, ogs_pfcp_urr_t *urr);
void upf_sess_urr_acc_timers_setup(upf_sess_t *sess, ogs_pfcp_urr_t *urr);
#ifdef __cplusplus
}
#endif
#endif /* UPF_CONTEXT_H */
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