forked from acouzens/open5gs
174 lines
5.3 KiB
C
174 lines
5.3 KiB
C
#ifndef __MME_CTX_H__
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#define __MME_CTX_H__
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#include "core_list.h"
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#include "core_errno.h"
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#include "core_net.h"
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#include "core_sha2.h"
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#include "3gpp_defs.h"
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#include "3gpp_types.h"
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#include "nas_types.h"
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#include "gtp_path.h"
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#include "sm.h"
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#ifdef __cplusplus
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extern "C" {
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#endif /* __cplusplus */
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#define MAX_PLMN_ID 6
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#define GRP_PER_MME 256 /* According to spec it is 65535 */
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#define CODE_PER_MME 256 /* According to spec it is 256 */
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typedef list_t ue_list_t;
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typedef list_t rab_list_t;
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typedef struct _served_gummei {
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c_uint32_t num_of_plmn_id;
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plmn_id_t plmn_id[MAX_PLMN_ID];
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c_uint32_t num_of_mme_gid;
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c_uint16_t mme_gid[GRP_PER_MME];
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c_uint32_t num_of_mme_code;
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c_uint8_t mme_code[CODE_PER_MME];
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} srvd_gummei_t;
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typedef struct _mme_ctx_t {
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c_uint32_t s1ap_addr;
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c_uint16_t s1ap_port;
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net_sock_t *s1ap_sock;
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msgq_id queue_id;
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tm_service_t tm_service;
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c_uint32_t mme_ue_s1ap_id; /** mme_ue_s1ap_id generator */
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plmn_id_t plmn_id;
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/* defined in 'nas_ies.h'
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* #define NAS_SECURITY_ALGORITHMS_EIA0 0
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* #define NAS_SECURITY_ALGORITHMS_128_EEA1 1
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* #define NAS_SECURITY_ALGORITHMS_128_EEA2 2
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* #define NAS_SECURITY_ALGORITHMS_128_EEA3 3 */
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c_uint8_t selected_enc_algorithm;
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/* defined in 'nas_ies.h'
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* #define NAS_SECURITY_ALGORITHMS_EIA0 0
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* #define NAS_SECURITY_ALGORITHMS_128_EIA1 1
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* #define NAS_SECURITY_ALGORITHMS_128_EIA1 2
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* #define NAS_SECURITY_ALGORITHMS_128_EIA3 3 */
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c_uint8_t selected_int_algorithm;
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/* S1SetupRequest */
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c_uint16_t tracking_area_code;
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c_uint16_t default_paging_drx;
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/* S1SetupResponse */
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srvd_gummei_t srvd_gummei;
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c_uint8_t relative_capacity;
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} mme_ctx_t;
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typedef struct _sgw_ctx_t {
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gtp_node_t gnode;
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} sgw_ctx_t;
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typedef struct _enb_ctx_t {
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lnode_t node; /**< A node of list_t */
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c_uint32_t enb_id; /** eNB_ID received from eNB */
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enb_s1ap_sm_t s1ap_sm;
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net_sock_t *s1ap_sock;
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ue_list_t ue_list;
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} enb_ctx_t;
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typedef struct _ue_ctx_t {
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lnode_t node; /**< A node of list_t */
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/* State Machine */
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ue_emm_sm_t emm_sm;
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/* UE identity */
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c_uint32_t enb_ue_s1ap_id; /** eNB-UE-S1AP-ID received from eNB */
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c_uint32_t mme_ue_s1ap_id; /** MME-UE-S1AP-ID received from MME */
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c_uint8_t imsi[MAX_IMSI_LEN+1];
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c_uint8_t imsi_len;
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/* Security Context */
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int security_context_available;
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nas_ue_network_capability_t ue_network_capability;
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nas_ms_network_capability_t ms_network_capability;
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c_uint8_t xres[MAX_RES_LEN];
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c_uint8_t xres_len;
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c_uint8_t kasme[SHA256_DIGEST_SIZE];
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c_uint8_t knas_int[SHA256_DIGEST_SIZE/2];
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c_uint8_t knas_enc[SHA256_DIGEST_SIZE/2];
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c_uint32_t dl_count;
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union {
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struct {
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ED3(c_uint8_t spare;,
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c_uint16_t overflow;,
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c_uint8_t sqn;)
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} __attribute__ ((packed));
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c_uint32_t i32;
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} ul_count;
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/* Related Context for UE */
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rab_list_t rab_list;
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enb_ctx_t *enb;
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} ue_ctx_t;
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/**
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* This structure represents RAB */
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typedef struct _rab_ctx_t {
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lnode_t node; /**< A node of list_t */
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c_uint32_t e_rab_id;
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ue_ctx_t *ue;
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} rab_ctx_t;
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CORE_DECLARE(status_t) mme_ctx_init(void);
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CORE_DECLARE(status_t) mme_ctx_final(void);
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CORE_DECLARE(mme_ctx_t*) mme_self(void);
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CORE_DECLARE(sgw_ctx_t*) mme_ctx_sgw_add(void);
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CORE_DECLARE(status_t) mme_ctx_sgw_remove(sgw_ctx_t *sgw);
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CORE_DECLARE(status_t) mme_ctx_sgw_remove_all(void);
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CORE_DECLARE(sgw_ctx_t*) mme_ctx_sgw_find_by_node(gtp_node_t *gnode);
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CORE_DECLARE(sgw_ctx_t*) mme_ctx_sgw_first(void);
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CORE_DECLARE(sgw_ctx_t*) mme_ctx_sgw_next(sgw_ctx_t *sgw);
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CORE_DECLARE(enb_ctx_t*) mme_ctx_enb_add(void);
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CORE_DECLARE(status_t) mme_ctx_enb_remove(enb_ctx_t *enb);
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CORE_DECLARE(status_t) mme_ctx_enb_remove_all(void);
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CORE_DECLARE(enb_ctx_t*) mme_ctx_enb_find_by_sock(net_sock_t *sock);
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CORE_DECLARE(enb_ctx_t*) mme_ctx_enb_find_by_enb_id(c_uint32_t enb_id);
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CORE_DECLARE(enb_ctx_t*) mme_ctx_enb_first(void);
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CORE_DECLARE(enb_ctx_t*) mme_ctx_enb_next(enb_ctx_t *enb);
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CORE_DECLARE(ue_ctx_t*) mme_ctx_ue_add(enb_ctx_t *enb);
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CORE_DECLARE(status_t) mme_ctx_ue_remove(ue_ctx_t *ue);
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CORE_DECLARE(status_t) mme_ctx_ue_remove_all(enb_ctx_t *enb);
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CORE_DECLARE(ue_ctx_t*) mme_ctx_ue_find_by_enb_ue_s1ap_id(
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enb_ctx_t *enb, c_uint32_t enb_ue_s1ap_id);
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CORE_DECLARE(ue_ctx_t*) mme_ctx_ue_first(enb_ctx_t *enb);
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CORE_DECLARE(ue_ctx_t*) mme_ctx_ue_next(ue_ctx_t *ue);
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CORE_DECLARE(rab_ctx_t*) mme_ctx_rab_add(ue_ctx_t *enb);
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CORE_DECLARE(status_t) mme_ctx_rab_remove(rab_ctx_t *ue);
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CORE_DECLARE(status_t) mme_ctx_rab_remove_all(ue_ctx_t *enb);
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CORE_DECLARE(rab_ctx_t*) mme_ctx_rab_find_by_e_rab_id(
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ue_ctx_t *ue, c_uint32_t e_rab_id);
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CORE_DECLARE(rab_ctx_t*) mme_ctx_rab_first(ue_ctx_t *enb);
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CORE_DECLARE(rab_ctx_t*) mme_ctx_rab_next(rab_ctx_t *ue);
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#ifdef __cplusplus
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}
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#endif /* __cplusplus */
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#endif /* __MME_CTX_H__ */
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