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open5gs/src/mme/mme_context.h

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#ifndef __MME_CONTEXT__
#define __MME_CONTEXT__
#include "core_list.h"
#include "core_index.h"
#include "core_errno.h"
#include "core_net.h"
#include "core_sha2.h"
#include "core_hash.h"
#include "3gpp_common.h"
#include "nas_types.h"
#include "gtp_xact.h"
#include "mme_sm.h"
#ifdef __cplusplus
extern "C" {
#endif /* __cplusplus */
#define MAX_PLMN_ID 6
#define GRP_PER_MME 256 /* According to spec it is 65535 */
#define CODE_PER_MME 256 /* According to spec it is 256 */
typedef struct _served_gummei {
c_uint32_t num_of_plmn_id;
plmn_id_t plmn_id[MAX_PLMN_ID];
c_uint32_t num_of_mme_gid;
c_uint16_t mme_gid[GRP_PER_MME];
c_uint32_t num_of_mme_code;
c_uint8_t mme_code[CODE_PER_MME];
} srvd_gummei_t;
typedef struct _mme_context_t {
c_uint32_t mme_addr; /* MME local address */
c_uint32_t s1ap_addr; /* MME S1AP local address */
c_uint16_t s1ap_port; /* MME S1AP local port */
net_sock_t *s1ap_sock; /* MME S1AP local listen socket */
c_uint32_t s11_addr; /* MME S11 local address */
c_uint16_t s11_port; /* MME S11 local port */
net_sock_t *s11_sock; /* MME S11 local listen socket */
msgq_id queue_id; /* Queue for processing MME control plane */
tm_service_t tm_service; /* Timer Service */
gtp_xact_ctx_t gtp_xact_ctx; /* GTP Transaction Context for MME */
c_uint32_t mme_ue_s1ap_id; /** mme_ue_s1ap_id generator */
plmn_id_t plmn_id;
/* defined in 'nas_ies.h'
* #define NAS_SECURITY_ALGORITHMS_EIA0 0
* #define NAS_SECURITY_ALGORITHMS_128_EEA1 1
* #define NAS_SECURITY_ALGORITHMS_128_EEA2 2
* #define NAS_SECURITY_ALGORITHMS_128_EEA3 3 */
c_uint8_t selected_enc_algorithm;
/* defined in 'nas_ies.h'
* #define NAS_SECURITY_ALGORITHMS_EIA0 0
* #define NAS_SECURITY_ALGORITHMS_128_EIA1 1
* #define NAS_SECURITY_ALGORITHMS_128_EIA1 2
* #define NAS_SECURITY_ALGORITHMS_128_EIA3 3 */
c_uint8_t selected_int_algorithm;
/* S1SetupRequest */
c_uint16_t tracking_area_code;
c_uint16_t default_paging_drx;
/* S1SetupResponse */
srvd_gummei_t srvd_gummei;
c_uint8_t relative_capacity;
list_t sgw_list;
list_t enb_list;
hash_t *mme_ue_s1ap_id_hash; /* hash table for MME-UE-S1AP-ID */
} mme_context_t;
typedef struct _mme_sgw_t {
gtp_node_t gnode; /* SGW S11 remote GTPv2-C node */
} mme_sgw_t;
typedef struct _mme_enb_t {
lnode_t node; /**< A node of list_t */
index_t index; /**< An index of this node */
fsm_t sm;
c_uint32_t enb_id; /** eNB_ID received from eNB */
net_sock_t *s1ap_sock;
list_t ue_list;
} mme_enb_t;
typedef struct _mme_ue_t {
lnode_t node; /**< A node of list_t */
index_t index; /**< An index of this node */
fsm_t sm;
/* State Machine */
/* UE identity */
c_uint32_t enb_ue_s1ap_id; /** eNB-UE-S1AP-ID received from eNB */
c_uint32_t mme_ue_s1ap_id; /** MME-UE-S1AP-ID received from MME */
c_uint8_t imsi[MAX_IMSI_LEN];
int imsi_len;
c_int8_t imsi_bcd[MAX_IMSI_BCD_LEN+1];
/* UE Info */
tai_t tai;
e_cgi_t e_cgi;
plmn_id_t visited_plmn_id;
/* Security Context */
int security_context_available;
nas_ue_network_capability_t ue_network_capability;
nas_ms_network_capability_t ms_network_capability;
c_uint8_t xres[MAX_RES_LEN];
c_uint8_t xres_len;
c_uint8_t kasme[SHA256_DIGEST_SIZE];
c_uint8_t rand[RAND_LEN];
c_uint8_t autn[AUTN_LEN];
c_uint8_t knas_int[SHA256_DIGEST_SIZE/2];
c_uint8_t knas_enc[SHA256_DIGEST_SIZE/2];
c_uint32_t dl_count;
union {
struct {
ED3(c_uint8_t spare;,
c_uint16_t overflow;,
c_uint8_t sqn;)
} __attribute__ ((packed));
c_uint32_t i32;
} ul_count;
/* HSS Info */
c_uint32_t ula_flags;
c_uint32_t max_bandwidth_ul; /* bits per seconds */
c_uint32_t max_bandwidth_dl; /* bits per seconds */
list_t pdn_list;
c_uint32_t subscribed_rau_tau_timer; /* seconds */
/* IMPORTANT!
* MME-S11-TEID is same with an index */
c_uint32_t mme_s11_teid;
c_uint32_t mme_s11_addr;
c_uint32_t sgw_s11_teid;
c_uint32_t sgw_s11_addr;
/* ESM Info */
c_uint8_t ebi; /* EPS Bearer ID generator */
list_t esm_list;
mme_enb_t *enb;
} mme_ue_t;
typedef struct _mme_esm_t {
lnode_t node; /**< A node of list_t */
index_t index; /**< An index of this node */
fsm_t sm;
c_uint8_t pti; /** Procedure Trasaction Identity */
c_uint8_t ebi; /** EPS Bearer ID */
c_uint32_t enb_s1u_teid;
c_uint32_t enb_s1u_addr;
c_uint32_t sgw_s1u_teid;
c_uint32_t sgw_s1u_addr;
/* Protocol Configuration Options */
c_uint8_t ue_pco[MAX_PCO_LEN];
int ue_pco_len;
c_uint8_t pgw_pco[MAX_PCO_LEN];
int pgw_pco_len;
mme_sgw_t *sgw;
pdn_t *pdn;
mme_ue_t *ue;
} mme_esm_t;
CORE_DECLARE(status_t) mme_context_init(void);
CORE_DECLARE(status_t) mme_context_final(void);
CORE_DECLARE(mme_context_t*) mme_self(void);
CORE_DECLARE(mme_sgw_t*) mme_sgw_add(void);
CORE_DECLARE(status_t) mme_sgw_remove(mme_sgw_t *sgw);
CORE_DECLARE(status_t) mme_sgw_remove_all(void);
CORE_DECLARE(mme_sgw_t*) mme_sgw_find_by_node(gtp_node_t *gnode);
CORE_DECLARE(mme_sgw_t*) mme_sgw_first(void);
CORE_DECLARE(mme_sgw_t*) mme_sgw_next(mme_sgw_t *sgw);
CORE_DECLARE(mme_enb_t*) mme_enb_add(net_sock_t *s1ap_sock);
CORE_DECLARE(status_t) mme_enb_remove(mme_enb_t *enb);
CORE_DECLARE(status_t) mme_enb_remove_all(void);
CORE_DECLARE(mme_enb_t*) mme_enb_find(index_t index);
CORE_DECLARE(mme_enb_t*) mme_enb_find_by_sock(net_sock_t *sock);
CORE_DECLARE(mme_enb_t*) mme_enb_find_by_enb_id(c_uint32_t enb_id);
CORE_DECLARE(mme_enb_t*) mme_enb_first(void);
CORE_DECLARE(mme_enb_t*) mme_enb_next(mme_enb_t *enb);
CORE_DECLARE(mme_ue_t*) mme_ue_add(mme_enb_t *enb);
CORE_DECLARE(status_t) mme_ue_remove(mme_ue_t *ue);
CORE_DECLARE(status_t) mme_ue_remove_all();
CORE_DECLARE(mme_ue_t*) mme_ue_find(index_t index);
CORE_DECLARE(mme_ue_t*) mme_ue_find_by_mme_ue_s1ap_id(
c_uint32_t mme_ue_s1ap_id);
CORE_DECLARE(mme_ue_t*) mme_ue_find_by_teid(c_uint32_t teid);
CORE_DECLARE(hash_index_t *) mme_ue_first();
CORE_DECLARE(hash_index_t *) mme_ue_next(hash_index_t *hi);
CORE_DECLARE(mme_ue_t *) mme_ue_this(hash_index_t *hi);
CORE_DECLARE(unsigned int) mme_ue_count();
CORE_DECLARE(status_t) mme_ue_remove_in_enb(mme_enb_t *enb);
CORE_DECLARE(mme_ue_t*) mme_ue_find_by_enb_ue_s1ap_id(
mme_enb_t *enb, c_uint32_t enb_ue_s1ap_id);
CORE_DECLARE(mme_ue_t*) mme_ue_first_in_enb(mme_enb_t *enb);
CORE_DECLARE(mme_ue_t*) mme_ue_next_in_enb(mme_ue_t *ue);
CORE_DECLARE(mme_esm_t*) mme_esm_add(mme_ue_t *ue, c_uint8_t pti);
CORE_DECLARE(status_t) mme_esm_remove(mme_esm_t *esm);
CORE_DECLARE(status_t) mme_esm_remove_all(mme_ue_t *ue);
CORE_DECLARE(mme_esm_t*) mme_esm_find(index_t index);
CORE_DECLARE(mme_esm_t*) mme_esm_find_by_pti(mme_ue_t *ue, c_uint8_t pti);
CORE_DECLARE(mme_esm_t*) mme_esm_find_by_ebi(mme_ue_t *ue, c_uint8_t ebi);
CORE_DECLARE(mme_esm_t*) mme_esm_first(mme_ue_t *ue);
CORE_DECLARE(mme_esm_t*) mme_esm_next(mme_esm_t *esm);
CORE_DECLARE(pdn_t*) mme_pdn_add(mme_ue_t *ue, c_int8_t *apn);
CORE_DECLARE(status_t) mme_pdn_remove(pdn_t *pdn);
CORE_DECLARE(status_t) mme_pdn_remove_all(mme_ue_t *ue);
CORE_DECLARE(pdn_t*) mme_pdn_find_by_apn(mme_ue_t *ue, c_int8_t *apn);
CORE_DECLARE(pdn_t*) mme_pdn_first(mme_ue_t *ue);
CORE_DECLARE(pdn_t*) mme_pdn_next(pdn_t *pdn);
#ifdef __cplusplus
}
#endif /* __cplusplus */
#endif /* __MME_CONTEXT__ */
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