mirror of https://github.com/PentHertz/srsLTE.git
123 lines
5.4 KiB
C++
123 lines
5.4 KiB
C++
/**
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*
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* \section COPYRIGHT
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*
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* Copyright 2013-2021 Software Radio Systems Limited
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*
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* By using this file, you agree to the terms and conditions set
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* forth in the LICENSE file which can be found at the top level of
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* the distribution.
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*
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*/
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#ifndef SRSRAN_EPC_INTERFACES_H
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#define SRSRAN_EPC_INTERFACES_H
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#include "srsran/asn1/gtpc_ies.h"
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#include "srsran/common/common.h"
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#include <netinet/sctp.h>
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#include <queue>
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namespace srsepc {
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class nas;
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enum nas_timer_type {
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T_3413,
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};
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/******************
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* MME Interfaces *
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******************/
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class gtpc_interface_nas // NAS -> GTP-C
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{
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public:
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virtual bool send_create_session_request(uint64_t imsi) = 0;
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virtual bool send_modify_bearer_request(uint64_t imsi, uint16_t erab_to_modify, srsran::gtp_fteid_t* enb_fteid) = 0;
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virtual bool send_delete_session_request(uint64_t imsi) = 0;
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virtual bool send_downlink_data_notification_failure_indication(uint64_t imsi,
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enum srsran::gtpc_cause_value cause) = 0;
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};
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class s1ap_interface_gtpc // GTP-C -> S1AP
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{
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public:
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virtual bool send_initial_context_setup_request(uint64_t imsi, uint16_t erab_to_setup) = 0;
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};
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class s1ap_interface_nas // NAS -> S1AP
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{
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public:
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virtual uint32_t allocate_m_tmsi(uint64_t imsi) = 0;
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virtual uint32_t get_next_mme_ue_s1ap_id() = 0;
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virtual bool add_nas_ctx_to_imsi_map(nas* nas_ctx) = 0;
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virtual bool add_nas_ctx_to_mme_ue_s1ap_id_map(nas* nas_ctx) = 0;
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virtual bool add_ue_to_enb_set(int32_t enb_assoc, uint32_t mme_ue_s1ap_id) = 0;
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virtual bool release_ue_ecm_ctx(uint32_t mme_ue_s1ap_id) = 0;
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virtual bool delete_ue_ctx(uint64_t imsi) = 0;
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virtual uint64_t find_imsi_from_m_tmsi(uint32_t m_tmsi) = 0;
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virtual nas* find_nas_ctx_from_imsi(uint64_t imsi) = 0;
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virtual bool send_initial_context_setup_request(uint64_t imsi, uint16_t erab_to_setup) = 0;
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virtual bool send_ue_context_release_command(uint32_t mme_ue_s1ap_id) = 0;
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virtual bool send_erab_release_command(uint32_t enb_ue_s1ap_id,
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uint32_t mme_ue_s1ap_id,
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std::vector<uint16_t> erabs_to_release,
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struct sctp_sndrcvinfo enb_sri) = 0;
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virtual bool send_erab_modify_request(uint32_t enb_ue_s1ap_id,
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uint32_t mme_ue_s1ap_id,
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std::map<uint16_t, uint16_t> erabs_to_modify,
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srsran::byte_buffer_t* nas_msg,
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struct sctp_sndrcvinfo enb_sri) = 0;
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virtual bool send_downlink_nas_transport(uint32_t enb_ue_s1ap_id,
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uint32_t mme_ue_s1ap_id,
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srsran::byte_buffer_t* nas_msg,
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struct sctp_sndrcvinfo enb_sri) = 0;
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};
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class hss_interface_nas // NAS -> HSS
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{
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public:
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virtual bool gen_auth_info_answer(uint64_t imsi, uint8_t* k_asme, uint8_t* autn, uint8_t* rand, uint8_t* xres) = 0;
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virtual bool gen_update_loc_answer(uint64_t imsi, uint8_t* qci) = 0;
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virtual bool resync_sqn(uint64_t imsi, uint8_t* auts) = 0;
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};
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class mme_interface_nas // NAS -> MME
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{
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public:
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virtual bool add_nas_timer(int timer_fd, enum nas_timer_type type, uint64_t imsi) = 0;
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virtual bool is_nas_timer_running(enum nas_timer_type type, uint64_t imsi) = 0;
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virtual bool remove_nas_timer(enum nas_timer_type type, uint64_t imsi) = 0;
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};
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class s1ap_interface_mme // MME -> S1AP
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{
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public:
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virtual bool expire_nas_timer(enum nas_timer_type type, uint64_t imsi) = 0;
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};
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/*******************
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* SPGW Interfaces *
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*******************/
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class gtpu_interface_gtpc // GTP-C -> GTP-U
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{
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public:
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virtual in_addr_t get_s1u_addr() = 0;
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virtual bool modify_gtpu_tunnel(in_addr_t ue_ipv4, srsran::gtpc_f_teid_ie dw_user_fteid, uint32_t up_ctrl_teid) = 0;
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virtual bool delete_gtpu_tunnel(in_addr_t ue_ipv4) = 0;
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virtual bool delete_gtpc_tunnel(in_addr_t ue_ipv4) = 0;
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virtual void send_all_queued_packets(srsran::gtp_fteid_t dw_user_fteid,
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std::queue<srsran::unique_byte_buffer_t>& pkt_queue) = 0;
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};
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class gtpc_interface_gtpu // GTP-U -> GTP-C
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{
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public:
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virtual bool queue_downlink_packet(uint32_t spgw_ctr_teid, srsran::unique_byte_buffer_t msg) = 0;
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virtual bool send_downlink_data_notification(uint32_t spgw_ctr_teid) = 0;
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};
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} // namespace srsepc
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#endif // SRSRAN_EPC_INTERFACES_H
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