mirror of https://github.com/PentHertz/srsLTE.git
changed the s1ap to allow the insertion of users without rnti
This commit is contained in:
parent
55a5947df7
commit
7557ef45c8
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@ -34,17 +34,18 @@
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#include "s1ap_metrics.h"
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#include "srslte/common/network_utils.h"
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#include "srslte/common/stack_procedure.h"
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#include <unordered_map>
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namespace srsenb {
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typedef struct {
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uint32_t rnti;
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uint32_t eNB_UE_S1AP_ID;
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uint32_t MME_UE_S1AP_ID;
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bool release_requested;
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uint16_t stream_id;
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struct timeval init_timestamp;
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} ue_ctxt_t;
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struct ue_ctxt_t {
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static const uint16_t invalid_rnti = std::numeric_limits<uint16_t>::max();
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static const uint32_t invalid_id = std::numeric_limits<uint32_t>::max();
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uint16_t rnti = invalid_rnti;
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uint32_t enb_ue_s1ap_id = invalid_id;
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uint32_t mme_ue_s1ap_id = invalid_id;
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struct timeval init_timestamp = {};
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};
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class s1ap : public s1ap_interface_rrc
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{
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@ -55,7 +56,6 @@ public:
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s1ap();
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bool init(s1ap_args_t args_,
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rrc_interface_s1ap* rrc_,
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srslte::log* s1ap_log_,
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srslte::timer_handler* timers_,
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srsenb::stack_interface_s1ap_lte* stack_);
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void stop();
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@ -75,6 +75,11 @@ public:
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void ue_ctxt_setup_complete(uint16_t rnti, const asn1::s1ap::init_context_setup_resp_s& res) override;
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void ue_erab_setup_complete(uint16_t rnti, const asn1::s1ap::erab_setup_resp_s& res) override;
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bool is_mme_connected() override;
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bool send_ho_required(uint16_t rnti,
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uint32_t target_eci,
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srslte::plmn_id_t target_plmn,
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srslte::unique_byte_buffer_t rrc_container) override;
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bool send_enb_status_transfer_proc(uint16_t rnti, std::vector<bearer_status_info>& bearer_status_list) override;
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// void ue_capabilities(uint16_t rnti, LIBLTE_RRC_UE_EUTRA_CAPABILITY_STRUCT *caps);
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// Stack interface
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@ -100,7 +105,7 @@ private:
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struct sockaddr_in mme_addr = {}; // MME address
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bool mme_connected = false;
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bool running = false;
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uint32_t next_eNB_UE_S1AP_ID = 1; // Next ENB-side UE identifier
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uint32_t next_enb_ue_s1ap_id = 1; // Next ENB-side UE identifier
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uint16_t next_ue_stream_id = 1; // Next UE SCTP stream identifier
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srslte::timer_handler::unique_timer mme_connect_timer, s1setup_timeout;
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@ -130,32 +135,10 @@ private:
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bool handle_erabsetuprequest(const asn1::s1ap::erab_setup_request_s& msg);
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bool handle_uecontextmodifyrequest(const asn1::s1ap::ue_context_mod_request_s& msg);
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bool send_initialuemessage(uint16_t rnti,
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asn1::s1ap::rrc_establishment_cause_e cause,
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srslte::unique_byte_buffer_t pdu,
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bool has_tmsi,
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uint32_t m_tmsi = 0,
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uint8_t mmec = 0);
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bool send_ulnastransport(uint16_t rnti, srslte::unique_byte_buffer_t pdu);
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bool send_uectxtreleaserequest(uint16_t rnti, const asn1::s1ap::cause_c& cause);
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bool send_uectxtreleasecomplete(uint16_t rnti, uint32_t mme_ue_id, uint32_t enb_ue_id);
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bool send_initial_ctxt_setup_response(uint16_t rnti, const asn1::s1ap::init_context_setup_resp_s& res_);
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bool send_initial_ctxt_setup_failure(uint16_t rnti);
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bool send_erab_setup_response(uint16_t rnti, const asn1::s1ap::erab_setup_resp_s& res_);
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// bool send_ue_capabilities(uint16_t rnti, LIBLTE_RRC_UE_EUTRA_CAPABILITY_STRUCT *caps)
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bool send_uectxmodifyresp(uint16_t rnti);
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bool send_uectxmodifyfailure(uint16_t rnti, const asn1::s1ap::cause_c& cause);
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// handover
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bool send_ho_required(uint16_t rnti,
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uint32_t target_eci,
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srslte::plmn_id_t target_plmn,
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srslte::unique_byte_buffer_t rrc_container) override;
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bool handle_hopreparationfailure(const asn1::s1ap::ho_prep_fail_s& msg);
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bool handle_s1hocommand(const asn1::s1ap::ho_cmd_s& msg);
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bool send_enb_status_transfer_proc(uint16_t rnti, std::vector<bearer_status_info>& bearer_status_list) override;
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bool find_mme_ue_id(uint32_t mme_ue_id, uint16_t* rnti, uint32_t* enb_ue_id);
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std::string get_cause(const asn1::s1ap::cause_c& c);
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// UE-specific data and procedures
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struct ue {
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@ -184,32 +167,68 @@ private:
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srslte::unique_byte_buffer_t rrc_container;
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};
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explicit ue(uint16_t rnti, s1ap* s1ap_ptr_);
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ue_ctxt_t& get_ctxt() { return ctxt; }
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srslte::proc_t<ho_prep_proc_t>& get_ho_prep_proc() { return ho_prep_proc; }
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explicit ue(s1ap* s1ap_ptr_);
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bool send_enb_status_transfer_proc(std::vector<bearer_status_info>& bearer_status_list);
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bool send_ulnastransport(srslte::unique_byte_buffer_t pdu);
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bool send_uectxtreleaserequest(const asn1::s1ap::cause_c& cause);
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bool send_uectxtmodifyfailure(const asn1::s1ap::cause_c& cause);
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bool send_uectxtmodifyresp();
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bool send_uectxtreleasecomplete();
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bool send_initialuemessage(asn1::s1ap::rrc_establishment_cause_e cause,
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srslte::unique_byte_buffer_t pdu,
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bool has_tmsi,
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uint32_t m_tmsi = 0,
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uint8_t mmec = 0);
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bool send_initial_ctxt_setup_response(const asn1::s1ap::init_context_setup_resp_s& res_);
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bool send_initial_ctxt_setup_failure();
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bool send_erab_setup_response(const asn1::s1ap::erab_setup_resp_s& res_);
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bool was_uectxtrelease_requested() const { return release_requested; }
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ue_ctxt_t ctxt = {};
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uint16_t stream_id = 1;
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// user procedures
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srslte::proc_t<ho_prep_proc_t> ho_prep_proc;
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private:
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bool
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send_ho_required(uint32_t target_eci_, srslte::plmn_id_t target_plmn_, srslte::unique_byte_buffer_t rrc_container);
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//! TS 36.413, Section 8.4.6 - eNB Status Transfer procedure
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// args
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s1ap* s1ap_ptr;
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srslte::log* s1ap_log;
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ue_ctxt_t ctxt = {};
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// state
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bool release_requested = false;
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srslte::timer_handler::unique_timer ts1_reloc_prep; ///< TS1_{RELOCprep} - max time for HO preparation
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srslte::timer_handler::unique_timer ts1_reloc_overall; ///< TS1_{RELOCOverall}
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// user procedures
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srslte::proc_t<ho_prep_proc_t> ho_prep_proc;
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};
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std::map<uint16_t, std::unique_ptr<ue> > users;
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std::map<uint32_t, uint16_t> enbid_to_rnti_map;
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ue_ctxt_t* get_user_ctxt(uint16_t rnti);
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class user_list
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{
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public:
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using value_type = std::unique_ptr<ue>;
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using iterator = std::unordered_map<uint32_t, value_type>::iterator;
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using const_iterator = std::unordered_map<uint32_t, value_type>::const_iterator;
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using pair_type = std::unordered_map<uint32_t, value_type>::value_type;
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ue* find_ue_rnti(uint16_t rnti);
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ue* find_ue_enbid(uint32_t enbid);
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ue* find_ue_mmeid(uint32_t mmeid);
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ue* add_user(value_type user);
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void erase(ue* ue_ptr);
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iterator begin() { return users.begin(); }
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iterator end() { return users.end(); }
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const_iterator cbegin() const { return users.begin(); }
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const_iterator cend() const { return users.end(); }
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size_t size() const { return users.size(); }
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private:
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std::unordered_map<uint32_t, std::unique_ptr<ue> > users; // maps ENB_S1AP_ID to user
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};
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user_list users;
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// timers
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srslte::timer_handler* timers = nullptr;
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@ -235,6 +254,10 @@ private:
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s1ap* s1ap_ptr = nullptr;
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};
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ue* find_s1apmsg_user(uint32_t enb_id, uint32_t mme_id);
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std::string get_cause(const asn1::s1ap::cause_c& c);
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srslte::proc_t<s1_setup_proc_t> s1setup_proc;
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};
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@ -118,7 +118,7 @@ int enb_stack_lte::init(const stack_args_t& args_, const rrc_cfg_t& rrc_cfg_)
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rlc.init(&pdcp, &rrc, &mac, &timers, &rlc_log);
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pdcp.init(&rlc, &rrc, >pu);
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rrc.init(&rrc_cfg, phy, &mac, &rlc, &pdcp, &s1ap, >pu, &timers, &rrc_log);
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s1ap.init(args.s1ap, &rrc, &s1ap_log, &timers, this);
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s1ap.init(args.s1ap, &rrc, &timers, this);
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gtpu.init(args.s1ap.gtp_bind_addr,
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args.s1ap.mme_addr,
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args.embms.m1u_multiaddr,
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@ -23,6 +23,7 @@
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#include "srsenb/hdr/stack/upper/common_enb.h"
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#include "srslte/common/bcd_helpers.h"
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#include "srslte/common/int_helpers.h"
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#include "srslte/common/logmap.h"
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#include <arpa/inet.h> //for inet_ntop()
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#include <inttypes.h>
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@ -57,7 +58,7 @@ srslte::proc_outcome_t s1ap::ue::ho_prep_proc_t::init(uint32_t
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target_eci = target_eci_;
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target_plmn = target_plmn_;
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procInfo("Sending HandoverRequired to MME id=%d\n", ue_ptr->ctxt.MME_UE_S1AP_ID);
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procInfo("Sending HandoverRequired to MME id=%d\n", ue_ptr->ctxt.mme_ue_s1ap_id);
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if (not ue_ptr->send_ho_required(target_eci, target_plmn, std::move(rrc_container_))) {
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procError("Failed to send HORequired to cell 0x%x\n", target_eci);
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return srslte::proc_outcome_t::error;
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@ -222,13 +223,12 @@ s1ap::s1ap() : s1setup_proc(this) {}
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bool s1ap::init(s1ap_args_t args_,
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rrc_interface_s1ap* rrc_,
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srslte::log* s1ap_log_,
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srslte::timer_handler* timers_,
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srsenb::stack_interface_s1ap_lte* stack_)
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{
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rrc = rrc_;
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args = args_;
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s1ap_log = s1ap_log_;
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s1ap_log = srslte::logmap::get("S1AP");
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timers = timers_;
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stack = stack_;
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pool = srslte::byte_buffer_pool::get_instance();
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@ -324,8 +324,14 @@ void s1ap::build_tai_cgi()
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********************************************************************************/
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void s1ap::initial_ue(uint16_t rnti, asn1::s1ap::rrc_establishment_cause_e cause, srslte::unique_byte_buffer_t pdu)
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{
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users.insert(std::make_pair(rnti, std::unique_ptr<ue>(new ue{rnti, this})));
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send_initialuemessage(rnti, cause, std::move(pdu), false);
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std::unique_ptr<ue> ue_ptr{new ue{this}};
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ue_ptr->ctxt.rnti = rnti;
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ue* u = users.add_user(std::move(ue_ptr));
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if (u == nullptr) {
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s1ap_log->error("Failed to add rnti=0x%x\n", rnti);
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return;
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}
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u->send_initialuemessage(cause, std::move(pdu), false);
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}
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void s1ap::initial_ue(uint16_t rnti,
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@ -334,31 +340,40 @@ void s1ap::initial_ue(uint16_t rnti,
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uint32_t m_tmsi,
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uint8_t mmec)
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{
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users.insert(std::make_pair(rnti, std::unique_ptr<ue>(new ue{rnti, this})));
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send_initialuemessage(rnti, cause, std::move(pdu), true, m_tmsi, mmec);
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std::unique_ptr<ue> ue_ptr{new ue{this}};
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ue_ptr->ctxt.rnti = rnti;
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ue* u = users.add_user(std::move(ue_ptr));
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if (u == nullptr) {
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s1ap_log->error("Failed to add rnti=0x%x\n", rnti);
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return;
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}
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u->send_initialuemessage(cause, std::move(pdu), true, m_tmsi, mmec);
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}
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void s1ap::write_pdu(uint16_t rnti, srslte::unique_byte_buffer_t pdu)
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{
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s1ap_log->info_hex(pdu->msg, pdu->N_bytes, "Received RRC SDU");
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if (get_user_ctxt(rnti) != nullptr) {
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send_ulnastransport(rnti, std::move(pdu));
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ue* u = users.find_ue_rnti(rnti);
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if (u == nullptr) {
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s1ap_log->info("The rnti=0x%x does not exist\n", rnti);
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return;
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}
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u->send_ulnastransport(std::move(pdu));
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}
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bool s1ap::user_release(uint16_t rnti, asn1::s1ap::cause_radio_network_e cause_radio)
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{
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s1ap_log->info("User inactivity - RNTI:0x%x\n", rnti);
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ue_ctxt_t* ctxt = get_user_ctxt(rnti);
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if (ctxt == nullptr) {
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ue* u = users.find_ue_rnti(rnti);
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if (u == nullptr) {
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return false;
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}
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if (ctxt->release_requested) {
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if (u->was_uectxtrelease_requested()) {
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s1ap_log->warning("UE context for RNTI:0x%x is in zombie state. Releasing...\n", rnti);
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users.erase(rnti);
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users.erase(u);
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rrc->release_complete(rnti);
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return false;
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}
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@ -366,27 +381,35 @@ bool s1ap::user_release(uint16_t rnti, asn1::s1ap::cause_radio_network_e cause_r
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cause_c cause;
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cause.set_radio_network().value = cause_radio.value;
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ctxt->release_requested = true;
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return send_uectxtreleaserequest(rnti, cause);
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return u->send_uectxtreleaserequest(cause);
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}
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bool s1ap::user_exists(uint16_t rnti)
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{
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return users.end() != users.find(rnti);
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return users.find_ue_rnti(rnti) != nullptr;
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}
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void s1ap::ue_ctxt_setup_complete(uint16_t rnti, const asn1::s1ap::init_context_setup_resp_s& res)
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{
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ue* u = users.find_ue_rnti(rnti);
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if (u == nullptr) {
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return;
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}
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if (res.protocol_ies.erab_setup_list_ctxt_su_res.value.size() > 0) {
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send_initial_ctxt_setup_response(rnti, res);
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u->send_initial_ctxt_setup_response(res);
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} else {
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send_initial_ctxt_setup_failure(rnti);
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u->send_initial_ctxt_setup_failure();
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}
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}
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void s1ap::ue_erab_setup_complete(uint16_t rnti, const asn1::s1ap::erab_setup_resp_s& res)
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{
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send_erab_setup_response(rnti, res);
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ue* u = users.find_ue_rnti(rnti);
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if (u == nullptr) {
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s1ap_log->error("rnti 0x%x not found\n", rnti);
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return;
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}
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u->send_erab_setup_response(res);
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}
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// void ue_capabilities(uint16_t rnti, LIBLTE_RRC_UE_EUTRA_CAPABILITY_STRUCT *caps)
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@ -588,13 +611,10 @@ bool s1ap::handle_dlnastransport(const dl_nas_transport_s& msg)
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if (msg.ext) {
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s1ap_log->warning("Not handling S1AP message extension\n");
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}
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if (enbid_to_rnti_map.end() == enbid_to_rnti_map.find(msg.protocol_ies.enb_ue_s1ap_id.value.value)) {
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s1ap_log->warning("eNB_UE_S1AP_ID not found - discarding message\n");
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ue* u = find_s1apmsg_user(msg.protocol_ies.enb_ue_s1ap_id.value.value, msg.protocol_ies.mme_ue_s1ap_id.value.value);
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if (u == nullptr) {
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return false;
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}
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uint16_t rnti = enbid_to_rnti_map[msg.protocol_ies.enb_ue_s1ap_id.value.value];
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ue_ctxt_t* ctxt = get_user_ctxt(rnti);
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ctxt->MME_UE_S1AP_ID = msg.protocol_ies.mme_ue_s1ap_id.value.value;
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if (msg.protocol_ies.ho_restrict_list_present) {
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s1ap_log->warning("Not handling HandoverRestrictionList\n");
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@ -610,7 +630,7 @@ bool s1ap::handle_dlnastransport(const dl_nas_transport_s& msg)
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}
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memcpy(pdu->msg, msg.protocol_ies.nas_pdu.value.data(), msg.protocol_ies.nas_pdu.value.size());
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pdu->N_bytes = msg.protocol_ies.nas_pdu.value.size();
|
||||
rrc->write_dl_info(rnti, std::move(pdu));
|
||||
rrc->write_dl_info(u->ctxt.rnti, std::move(pdu));
|
||||
return true;
|
||||
}
|
||||
|
||||
|
@ -620,21 +640,13 @@ bool s1ap::handle_initialctxtsetuprequest(const init_context_setup_request_s& ms
|
|||
if (msg.ext) {
|
||||
s1ap_log->warning("Not handling S1AP message extension\n");
|
||||
}
|
||||
if (enbid_to_rnti_map.end() == enbid_to_rnti_map.find(msg.protocol_ies.enb_ue_s1ap_id.value.value)) {
|
||||
s1ap_log->warning("eNB_UE_S1AP_ID not found - discarding message\n");
|
||||
ue* u = find_s1apmsg_user(msg.protocol_ies.enb_ue_s1ap_id.value.value, msg.protocol_ies.mme_ue_s1ap_id.value.value);
|
||||
if (u == nullptr) {
|
||||
return false;
|
||||
}
|
||||
uint16_t rnti = enbid_to_rnti_map[msg.protocol_ies.enb_ue_s1ap_id.value.value];
|
||||
ue_ctxt_t* ctxt = get_user_ctxt(rnti);
|
||||
if (msg.protocol_ies.mme_ue_s1ap_id.value.value != ctxt->MME_UE_S1AP_ID) {
|
||||
s1ap_log->warning("MME_UE_S1AP_ID has changed - old:%d, new: %" PRIu64 "\n",
|
||||
ctxt->MME_UE_S1AP_ID,
|
||||
msg.protocol_ies.mme_ue_s1ap_id.value.value);
|
||||
ctxt->MME_UE_S1AP_ID = msg.protocol_ies.mme_ue_s1ap_id.value.value;
|
||||
}
|
||||
|
||||
// Setup UE ctxt in RRC
|
||||
if (!rrc->setup_ue_ctxt(rnti, msg)) {
|
||||
if (not rrc->setup_ue_ctxt(u->ctxt.rnti, msg)) {
|
||||
return false;
|
||||
}
|
||||
|
||||
|
@ -647,8 +659,7 @@ bool s1ap::handle_initialctxtsetuprequest(const init_context_setup_request_s& ms
|
|||
cause.set_radio_network().value = cause_radio_network_opts::cs_fallback_triggered;
|
||||
|
||||
/* TODO: This should normally probably only be sent after the SecurityMode procedure has completed! */
|
||||
ctxt->release_requested = true;
|
||||
send_uectxtreleaserequest(rnti, cause);
|
||||
u->send_uectxtreleaserequest(cause);
|
||||
}
|
||||
}
|
||||
|
||||
|
@ -671,49 +682,32 @@ bool s1ap::handle_erabsetuprequest(const erab_setup_request_s& msg)
|
|||
if (msg.ext) {
|
||||
s1ap_log->warning("Not handling S1AP message extension\n");
|
||||
}
|
||||
|
||||
if (enbid_to_rnti_map.end() == enbid_to_rnti_map.find(msg.protocol_ies.enb_ue_s1ap_id.value.value)) {
|
||||
s1ap_log->warning("eNB_UE_S1AP_ID not found - discarding message\n");
|
||||
ue* u = find_s1apmsg_user(msg.protocol_ies.enb_ue_s1ap_id.value.value, msg.protocol_ies.mme_ue_s1ap_id.value.value);
|
||||
if (u == nullptr) {
|
||||
return false;
|
||||
}
|
||||
uint16_t rnti = enbid_to_rnti_map[msg.protocol_ies.enb_ue_s1ap_id.value.value];
|
||||
ue_ctxt_t* ctxt = get_user_ctxt(rnti);
|
||||
if (msg.protocol_ies.mme_ue_s1ap_id.value.value != ctxt->MME_UE_S1AP_ID) {
|
||||
s1ap_log->warning("MME_UE_S1AP_ID has changed - old:%d, new:%" PRIu64 "\n",
|
||||
ctxt->MME_UE_S1AP_ID,
|
||||
msg.protocol_ies.mme_ue_s1ap_id.value.value);
|
||||
ctxt->MME_UE_S1AP_ID = msg.protocol_ies.mme_ue_s1ap_id.value.value;
|
||||
}
|
||||
|
||||
// Setup UE ctxt in RRC
|
||||
return rrc->setup_ue_erabs(rnti, msg);
|
||||
return rrc->setup_ue_erabs(u->ctxt.rnti, msg);
|
||||
}
|
||||
|
||||
bool s1ap::handle_uecontextmodifyrequest(const ue_context_mod_request_s& msg)
|
||||
{
|
||||
s1ap_log->info("Received UeContextModificationRequest\n");
|
||||
if (enbid_to_rnti_map.end() == enbid_to_rnti_map.find(msg.protocol_ies.enb_ue_s1ap_id.value.value)) {
|
||||
s1ap_log->warning("eNB_UE_S1AP_ID not found - discarding message\n");
|
||||
ue* u = find_s1apmsg_user(msg.protocol_ies.enb_ue_s1ap_id.value.value, msg.protocol_ies.mme_ue_s1ap_id.value.value);
|
||||
if (u == nullptr) {
|
||||
return false;
|
||||
}
|
||||
uint16_t rnti = enbid_to_rnti_map[msg.protocol_ies.enb_ue_s1ap_id.value.value];
|
||||
ue_ctxt_t* ctxt = get_user_ctxt(rnti);
|
||||
if (msg.protocol_ies.mme_ue_s1ap_id.value.value != ctxt->MME_UE_S1AP_ID) {
|
||||
s1ap_log->warning("MME_UE_S1AP_ID has changed - old:%d, new:%" PRIu64 "\n",
|
||||
ctxt->MME_UE_S1AP_ID,
|
||||
msg.protocol_ies.mme_ue_s1ap_id.value.value);
|
||||
ctxt->MME_UE_S1AP_ID = msg.protocol_ies.mme_ue_s1ap_id.value.value;
|
||||
}
|
||||
|
||||
if (!rrc->modify_ue_ctxt(rnti, msg)) {
|
||||
if (!rrc->modify_ue_ctxt(u->ctxt.rnti, msg)) {
|
||||
cause_c cause;
|
||||
cause.set_misc().value = cause_misc_opts::unspecified;
|
||||
send_uectxmodifyfailure(rnti, cause);
|
||||
u->send_uectxtmodifyfailure(cause);
|
||||
return true;
|
||||
}
|
||||
|
||||
// Send UEContextModificationResponse
|
||||
send_uectxmodifyresp(rnti);
|
||||
u->send_uectxtmodifyresp();
|
||||
|
||||
/* Ideally the check below would be "if (users[rnti].is_csfb)" */
|
||||
if (msg.protocol_ies.cs_fallback_ind_present) {
|
||||
|
@ -723,8 +717,7 @@ bool s1ap::handle_uecontextmodifyrequest(const ue_context_mod_request_s& msg)
|
|||
cause_c cause;
|
||||
cause.set_radio_network().value = cause_radio_network_opts::cs_fallback_triggered;
|
||||
|
||||
ctxt->release_requested = true;
|
||||
send_uectxtreleaserequest(rnti, cause);
|
||||
u->send_uectxtreleaserequest(cause);
|
||||
}
|
||||
}
|
||||
|
||||
|
@ -738,7 +731,7 @@ bool s1ap::handle_uectxtreleasecommand(const ue_context_release_cmd_s& msg)
|
|||
s1ap_log->warning("Not handling S1AP message extension\n");
|
||||
}
|
||||
|
||||
uint16_t rnti = 0;
|
||||
ue* u = nullptr;
|
||||
if (msg.protocol_ies.ue_s1ap_ids.value.type().value == ue_s1ap_ids_c::types_opts::ue_s1ap_id_pair) {
|
||||
auto& idpair = msg.protocol_ies.ue_s1ap_ids.value.ue_s1ap_id_pair();
|
||||
|
||||
|
@ -748,33 +741,23 @@ bool s1ap::handle_uectxtreleasecommand(const ue_context_release_cmd_s& msg)
|
|||
if (idpair.ie_exts_present) {
|
||||
s1ap_log->warning("Not handling S1AP message iE_Extensions\n");
|
||||
}
|
||||
uint32_t enb_ue_id = idpair.enb_ue_s1ap_id;
|
||||
if (enbid_to_rnti_map.end() == enbid_to_rnti_map.find(enb_ue_id)) {
|
||||
s1ap_log->warning("eNB_UE_S1AP_ID:%d not found - discarding message\n", enb_ue_id);
|
||||
u = find_s1apmsg_user(idpair.enb_ue_s1ap_id, idpair.mme_ue_s1ap_id);
|
||||
if (u == nullptr) {
|
||||
return false;
|
||||
}
|
||||
rnti = enbid_to_rnti_map[enb_ue_id];
|
||||
enbid_to_rnti_map.erase(enb_ue_id);
|
||||
|
||||
} else { // LIBLTE_S1AP_UE_S1AP_IDS_CHOICE_MME_UE_S1AP_ID
|
||||
|
||||
} else {
|
||||
uint32_t mme_ue_id = msg.protocol_ies.ue_s1ap_ids.value.mme_ue_s1ap_id();
|
||||
uint32_t enb_ue_id;
|
||||
if (!find_mme_ue_id(mme_ue_id, &rnti, &enb_ue_id)) {
|
||||
s1ap_log->warning("UE for MME_UE_S1AP_ID:%d not found - discarding message\n", mme_ue_id);
|
||||
u = users.find_ue_mmeid(mme_ue_id);
|
||||
if (u == nullptr) {
|
||||
s1ap_log->warning("UE for mme_ue_s1ap_id:%d not found - discarding message\n", mme_ue_id);
|
||||
return false;
|
||||
}
|
||||
enbid_to_rnti_map.erase(enb_ue_id);
|
||||
}
|
||||
|
||||
ue_ctxt_t* ctxt = get_user_ctxt(rnti);
|
||||
if (ctxt == nullptr) {
|
||||
return false;
|
||||
}
|
||||
|
||||
uint16_t rnti = u->ctxt.rnti;
|
||||
rrc->release_erabs(rnti);
|
||||
send_uectxtreleasecomplete(rnti, ctxt->MME_UE_S1AP_ID, ctxt->eNB_UE_S1AP_ID);
|
||||
users.erase(rnti);
|
||||
u->send_uectxtreleasecomplete();
|
||||
users.erase(u);
|
||||
s1ap_log->info("UE context for RNTI:0x%x released\n", rnti);
|
||||
rrc->release_complete(rnti);
|
||||
return true;
|
||||
|
@ -790,22 +773,23 @@ bool s1ap::handle_s1setupfailure(const asn1::s1ap::s1_setup_fail_s& msg)
|
|||
|
||||
bool s1ap::handle_hopreparationfailure(const ho_prep_fail_s& msg)
|
||||
{
|
||||
auto user_it = users.find(enbid_to_rnti_map[msg.protocol_ies.enb_ue_s1ap_id.value.value]);
|
||||
if (user_it == users.end()) {
|
||||
s1ap_log->error("user rnti=0x%x no longer exists\n", user_it->first);
|
||||
s1ap_log->info("Received HO Preparation Failure\n");
|
||||
ue* u = find_s1apmsg_user(msg.protocol_ies.enb_ue_s1ap_id.value.value, msg.protocol_ies.mme_ue_s1ap_id.value.value);
|
||||
if (u == nullptr) {
|
||||
return false;
|
||||
}
|
||||
user_it->second->get_ho_prep_proc().trigger(msg);
|
||||
u->ho_prep_proc.trigger(msg);
|
||||
return true;
|
||||
}
|
||||
|
||||
bool s1ap::handle_s1hocommand(const asn1::s1ap::ho_cmd_s& msg)
|
||||
{
|
||||
auto user_it = users.find(enbid_to_rnti_map[msg.protocol_ies.enb_ue_s1ap_id.value.value]);
|
||||
if (user_it == users.end()) {
|
||||
s1ap_log->error("user rnti=0x%x no longer exists\n", user_it->first);
|
||||
s1ap_log->info("Received S1 HO Command\n");
|
||||
ue* u = find_s1apmsg_user(msg.protocol_ies.enb_ue_s1ap_id.value.value, msg.protocol_ies.mme_ue_s1ap_id.value.value);
|
||||
if (u == nullptr) {
|
||||
return false;
|
||||
}
|
||||
user_it->second->get_ho_prep_proc().trigger(msg);
|
||||
u->ho_prep_proc.trigger(msg);
|
||||
return true;
|
||||
}
|
||||
|
||||
|
@ -813,14 +797,13 @@ bool s1ap::handle_s1hocommand(const asn1::s1ap::ho_cmd_s& msg)
|
|||
/* S1AP message senders
|
||||
********************************************************************************/
|
||||
|
||||
bool s1ap::send_initialuemessage(uint16_t rnti,
|
||||
asn1::s1ap::rrc_establishment_cause_e cause,
|
||||
srslte::unique_byte_buffer_t pdu,
|
||||
bool has_tmsi,
|
||||
uint32_t m_tmsi,
|
||||
uint8_t mmec)
|
||||
bool s1ap::ue::send_initialuemessage(asn1::s1ap::rrc_establishment_cause_e cause,
|
||||
srslte::unique_byte_buffer_t pdu,
|
||||
bool has_tmsi,
|
||||
uint32_t m_tmsi,
|
||||
uint8_t mmec)
|
||||
{
|
||||
if (!mme_connected) {
|
||||
if (not s1ap_ptr->mme_connected) {
|
||||
return false;
|
||||
}
|
||||
|
||||
|
@ -836,107 +819,103 @@ bool s1ap::send_initialuemessage(uint16_t rnti,
|
|||
}
|
||||
|
||||
// ENB_UE_S1AP_ID
|
||||
container.enb_ue_s1ap_id.value = get_user_ctxt(rnti)->eNB_UE_S1AP_ID;
|
||||
container.enb_ue_s1ap_id.value = ctxt.enb_ue_s1ap_id;
|
||||
|
||||
// NAS_PDU
|
||||
container.nas_pdu.value.resize(pdu->N_bytes);
|
||||
memcpy(container.nas_pdu.value.data(), pdu->msg, pdu->N_bytes);
|
||||
|
||||
// TAI
|
||||
container.tai.value.ie_exts_present = tai.iE_Extensions_present;
|
||||
container.tai.value.ext = tai.ext;
|
||||
memcpy(container.tai.value.tac.data(), tai.tAC.buffer, 2);
|
||||
memcpy(container.tai.value.plm_nid.data(), tai.pLMNidentity.buffer, 3);
|
||||
container.tai.value.ie_exts_present = s1ap_ptr->tai.iE_Extensions_present;
|
||||
container.tai.value.ext = s1ap_ptr->tai.ext;
|
||||
memcpy(container.tai.value.tac.data(), s1ap_ptr->tai.tAC.buffer, 2);
|
||||
memcpy(container.tai.value.plm_nid.data(), s1ap_ptr->tai.pLMNidentity.buffer, 3);
|
||||
|
||||
// EUTRAN_CGI
|
||||
container.eutran_cgi.value.ext = eutran_cgi.ext;
|
||||
container.eutran_cgi.value.ie_exts_present = eutran_cgi.iE_Extensions_present;
|
||||
memcpy(container.eutran_cgi.value.plm_nid.data(), eutran_cgi.pLMNidentity.buffer, 3);
|
||||
container.eutran_cgi.value.ext = s1ap_ptr->eutran_cgi.ext;
|
||||
container.eutran_cgi.value.ie_exts_present = s1ap_ptr->eutran_cgi.iE_Extensions_present;
|
||||
memcpy(container.eutran_cgi.value.plm_nid.data(), s1ap_ptr->eutran_cgi.pLMNidentity.buffer, 3);
|
||||
for (uint32_t i = 0; i < 28; ++i) {
|
||||
container.eutran_cgi.value.cell_id.set(i, (bool)eutran_cgi.cell_ID.buffer[i]);
|
||||
container.eutran_cgi.value.cell_id.set(i, (bool)s1ap_ptr->eutran_cgi.cell_ID.buffer[i]);
|
||||
}
|
||||
|
||||
// RRC Establishment Cause
|
||||
container.rrc_establishment_cause.value = cause;
|
||||
|
||||
return sctp_send_s1ap_pdu(tx_pdu, rnti, "InitialUEMessage");
|
||||
return s1ap_ptr->sctp_send_s1ap_pdu(tx_pdu, ctxt.rnti, "InitialUEMessage");
|
||||
}
|
||||
|
||||
bool s1ap::send_ulnastransport(uint16_t rnti, srslte::unique_byte_buffer_t pdu)
|
||||
bool s1ap::ue::send_ulnastransport(srslte::unique_byte_buffer_t pdu)
|
||||
{
|
||||
if (!mme_connected) {
|
||||
if (not s1ap_ptr->mme_connected) {
|
||||
return false;
|
||||
}
|
||||
|
||||
s1ap_pdu_c tx_pdu;
|
||||
tx_pdu.set_init_msg().load_info_obj(ASN1_S1AP_ID_UL_NAS_TRANSPORT);
|
||||
asn1::s1ap::ul_nas_transport_ies_container& container = tx_pdu.init_msg().value.ul_nas_transport().protocol_ies;
|
||||
// MME_UE_S1AP_ID
|
||||
container.mme_ue_s1ap_id.value = get_user_ctxt(rnti)->MME_UE_S1AP_ID;
|
||||
// ENB_UE_S1AP_ID
|
||||
container.enb_ue_s1ap_id.value = get_user_ctxt(rnti)->eNB_UE_S1AP_ID;
|
||||
container.mme_ue_s1ap_id.value = ctxt.mme_ue_s1ap_id;
|
||||
container.enb_ue_s1ap_id.value = ctxt.enb_ue_s1ap_id;
|
||||
|
||||
// NAS PDU
|
||||
container.nas_pdu.value.resize(pdu->N_bytes);
|
||||
memcpy(container.nas_pdu.value.data(), pdu->msg, pdu->N_bytes);
|
||||
|
||||
// EUTRAN CGI
|
||||
container.eutran_cgi.value.ext = eutran_cgi.ext;
|
||||
container.eutran_cgi.value.ie_exts_present = eutran_cgi.iE_Extensions_present;
|
||||
memcpy(container.eutran_cgi.value.plm_nid.data(), eutran_cgi.pLMNidentity.buffer, 3);
|
||||
container.eutran_cgi.value.ext = s1ap_ptr->eutran_cgi.ext;
|
||||
container.eutran_cgi.value.ie_exts_present = s1ap_ptr->eutran_cgi.iE_Extensions_present;
|
||||
memcpy(container.eutran_cgi.value.plm_nid.data(), s1ap_ptr->eutran_cgi.pLMNidentity.buffer, 3);
|
||||
for (uint32_t i = 0; i < 28; ++i) {
|
||||
container.eutran_cgi.value.cell_id.set(i, (bool)eutran_cgi.cell_ID.buffer[i]);
|
||||
container.eutran_cgi.value.cell_id.set(i, (bool)s1ap_ptr->eutran_cgi.cell_ID.buffer[i]);
|
||||
}
|
||||
|
||||
// TAI
|
||||
container.tai.value.ie_exts_present = tai.iE_Extensions_present;
|
||||
container.tai.value.ext = tai.ext;
|
||||
memcpy(container.tai.value.tac.data(), tai.tAC.buffer, 2);
|
||||
memcpy(container.tai.value.plm_nid.data(), tai.pLMNidentity.buffer, 3);
|
||||
container.tai.value.ie_exts_present = s1ap_ptr->tai.iE_Extensions_present;
|
||||
container.tai.value.ext = s1ap_ptr->tai.ext;
|
||||
memcpy(container.tai.value.tac.data(), s1ap_ptr->tai.tAC.buffer, 2);
|
||||
memcpy(container.tai.value.plm_nid.data(), s1ap_ptr->tai.pLMNidentity.buffer, 3);
|
||||
|
||||
return sctp_send_s1ap_pdu(tx_pdu, rnti, "UplinkNASTransport");
|
||||
return s1ap_ptr->sctp_send_s1ap_pdu(tx_pdu, ctxt.rnti, "UplinkNASTransport");
|
||||
}
|
||||
|
||||
bool s1ap::send_uectxtreleaserequest(uint16_t rnti, const cause_c& cause)
|
||||
bool s1ap::ue::send_uectxtreleaserequest(const cause_c& cause)
|
||||
{
|
||||
if (!mme_connected) {
|
||||
if (!s1ap_ptr->mme_connected) {
|
||||
return false;
|
||||
}
|
||||
release_requested = true;
|
||||
|
||||
s1ap_pdu_c tx_pdu;
|
||||
tx_pdu.set_init_msg().load_info_obj(ASN1_S1AP_ID_UE_CONTEXT_RELEASE_REQUEST);
|
||||
ue_context_release_request_ies_container& container =
|
||||
tx_pdu.init_msg().value.ue_context_release_request().protocol_ies;
|
||||
|
||||
// MME_UE_S1AP_ID
|
||||
container.mme_ue_s1ap_id.value = get_user_ctxt(rnti)->MME_UE_S1AP_ID;
|
||||
// ENB_UE_S1AP_ID
|
||||
container.enb_ue_s1ap_id.value = get_user_ctxt(rnti)->eNB_UE_S1AP_ID;
|
||||
container.mme_ue_s1ap_id.value = ctxt.mme_ue_s1ap_id;
|
||||
container.enb_ue_s1ap_id.value = ctxt.enb_ue_s1ap_id;
|
||||
|
||||
// Cause
|
||||
container.cause.value = cause;
|
||||
|
||||
return sctp_send_s1ap_pdu(tx_pdu, rnti, "UEContextReleaseRequest");
|
||||
return s1ap_ptr->sctp_send_s1ap_pdu(tx_pdu, ctxt.rnti, "UEContextReleaseRequest");
|
||||
}
|
||||
|
||||
bool s1ap::send_uectxtreleasecomplete(uint16_t rnti, uint32_t mme_ue_id, uint32_t enb_ue_id)
|
||||
bool s1ap::ue::send_uectxtreleasecomplete()
|
||||
{
|
||||
if (!mme_connected) {
|
||||
if (not s1ap_ptr->mme_connected) {
|
||||
return false;
|
||||
}
|
||||
|
||||
s1ap_pdu_c tx_pdu;
|
||||
tx_pdu.set_successful_outcome().load_info_obj(ASN1_S1AP_ID_UE_CONTEXT_RELEASE);
|
||||
auto& container = tx_pdu.successful_outcome().value.ue_context_release_cmd().protocol_ies;
|
||||
container.enb_ue_s1ap_id.value = enb_ue_id;
|
||||
container.mme_ue_s1ap_id.value = mme_ue_id;
|
||||
container.enb_ue_s1ap_id.value = ctxt.enb_ue_s1ap_id;
|
||||
container.mme_ue_s1ap_id.value = ctxt.mme_ue_s1ap_id;
|
||||
|
||||
return sctp_send_s1ap_pdu(tx_pdu, rnti, "UEContextReleaseComplete");
|
||||
return s1ap_ptr->sctp_send_s1ap_pdu(tx_pdu, ctxt.rnti, "UEContextReleaseComplete");
|
||||
}
|
||||
|
||||
bool s1ap::send_initial_ctxt_setup_response(uint16_t rnti, const asn1::s1ap::init_context_setup_resp_s& res_)
|
||||
bool s1ap::ue::send_initial_ctxt_setup_response(const asn1::s1ap::init_context_setup_resp_s& res_)
|
||||
{
|
||||
if (!mme_connected) {
|
||||
if (not s1ap_ptr->mme_connected) {
|
||||
return false;
|
||||
}
|
||||
|
||||
|
@ -948,26 +927,26 @@ bool s1ap::send_initial_ctxt_setup_response(uint16_t rnti, const asn1::s1ap::ini
|
|||
|
||||
// Fill in the MME and eNB IDs
|
||||
auto& container = tx_pdu.successful_outcome().value.init_context_setup_request().protocol_ies;
|
||||
container.mme_ue_s1ap_id.value = get_user_ctxt(rnti)->MME_UE_S1AP_ID;
|
||||
container.enb_ue_s1ap_id.value = get_user_ctxt(rnti)->eNB_UE_S1AP_ID;
|
||||
container.mme_ue_s1ap_id.value = ctxt.mme_ue_s1ap_id;
|
||||
container.enb_ue_s1ap_id.value = ctxt.enb_ue_s1ap_id;
|
||||
|
||||
// Fill in the GTP bind address for all bearers
|
||||
for (uint32_t i = 0; i < container.erab_setup_list_ctxt_su_res.value.size(); ++i) {
|
||||
auto& item = container.erab_setup_list_ctxt_su_res.value[i].value.erab_setup_item_ctxt_su_res();
|
||||
item.transport_layer_address.resize(32);
|
||||
uint8_t addr[4];
|
||||
inet_pton(AF_INET, args.gtp_bind_addr.c_str(), addr);
|
||||
inet_pton(AF_INET, s1ap_ptr->args.gtp_bind_addr.c_str(), addr);
|
||||
for (uint32_t j = 0; j < 4; ++j) {
|
||||
item.transport_layer_address.data()[j] = addr[3 - j];
|
||||
}
|
||||
}
|
||||
|
||||
return sctp_send_s1ap_pdu(tx_pdu, rnti, "InitialContextSetupResponse");
|
||||
return s1ap_ptr->sctp_send_s1ap_pdu(tx_pdu, ctxt.rnti, "InitialContextSetupResponse");
|
||||
}
|
||||
|
||||
bool s1ap::send_erab_setup_response(uint16_t rnti, const erab_setup_resp_s& res_)
|
||||
bool s1ap::ue::send_erab_setup_response(const erab_setup_resp_s& res_)
|
||||
{
|
||||
if (!mme_connected) {
|
||||
if (not s1ap_ptr->mme_connected) {
|
||||
return false;
|
||||
}
|
||||
|
||||
|
@ -983,7 +962,7 @@ bool s1ap::send_erab_setup_response(uint16_t rnti, const erab_setup_resp_s& res_
|
|||
auto& item = res.protocol_ies.erab_setup_list_bearer_su_res.value[i].value.erab_setup_item_bearer_su_res();
|
||||
item.transport_layer_address.resize(32);
|
||||
uint8_t addr[4];
|
||||
inet_pton(AF_INET, args.gtp_bind_addr.c_str(), addr);
|
||||
inet_pton(AF_INET, s1ap_ptr->args.gtp_bind_addr.c_str(), addr);
|
||||
for (uint32_t j = 0; j < 4; ++j) {
|
||||
item.transport_layer_address.data()[j] = addr[3 - j];
|
||||
}
|
||||
|
@ -991,15 +970,15 @@ bool s1ap::send_erab_setup_response(uint16_t rnti, const erab_setup_resp_s& res_
|
|||
}
|
||||
|
||||
// Fill in the MME and eNB IDs
|
||||
res.protocol_ies.mme_ue_s1ap_id.value = get_user_ctxt(rnti)->MME_UE_S1AP_ID;
|
||||
res.protocol_ies.enb_ue_s1ap_id.value = get_user_ctxt(rnti)->eNB_UE_S1AP_ID;
|
||||
res.protocol_ies.mme_ue_s1ap_id.value = ctxt.mme_ue_s1ap_id;
|
||||
res.protocol_ies.enb_ue_s1ap_id.value = ctxt.enb_ue_s1ap_id;
|
||||
|
||||
return sctp_send_s1ap_pdu(tx_pdu, rnti, "E_RABSetupResponse");
|
||||
return s1ap_ptr->sctp_send_s1ap_pdu(tx_pdu, ctxt.rnti, "E_RABSetupResponse");
|
||||
}
|
||||
|
||||
bool s1ap::send_initial_ctxt_setup_failure(uint16_t rnti)
|
||||
bool s1ap::ue::send_initial_ctxt_setup_failure()
|
||||
{
|
||||
if (!mme_connected) {
|
||||
if (not s1ap_ptr->mme_connected) {
|
||||
return false;
|
||||
}
|
||||
|
||||
|
@ -1007,16 +986,16 @@ bool s1ap::send_initial_ctxt_setup_failure(uint16_t rnti)
|
|||
tx_pdu.set_unsuccessful_outcome().load_info_obj(ASN1_S1AP_ID_INIT_CONTEXT_SETUP);
|
||||
auto& container = tx_pdu.unsuccessful_outcome().value.init_context_setup_request().protocol_ies;
|
||||
|
||||
container.enb_ue_s1ap_id.value = get_user_ctxt(rnti)->MME_UE_S1AP_ID;
|
||||
container.mme_ue_s1ap_id.value = get_user_ctxt(rnti)->eNB_UE_S1AP_ID;
|
||||
container.enb_ue_s1ap_id.value = ctxt.mme_ue_s1ap_id;
|
||||
container.mme_ue_s1ap_id.value = ctxt.enb_ue_s1ap_id;
|
||||
container.cause.value.set_radio_network().value = cause_radio_network_opts::unspecified;
|
||||
|
||||
return sctp_send_s1ap_pdu(tx_pdu, rnti, "InitialContextSetupFailure");
|
||||
return s1ap_ptr->sctp_send_s1ap_pdu(tx_pdu, ctxt.rnti, "InitialContextSetupFailure");
|
||||
}
|
||||
|
||||
bool s1ap::send_uectxmodifyresp(uint16_t rnti)
|
||||
bool s1ap::ue::send_uectxtmodifyresp()
|
||||
{
|
||||
if (!mme_connected) {
|
||||
if (not s1ap_ptr->mme_connected) {
|
||||
return false;
|
||||
}
|
||||
|
||||
|
@ -1024,15 +1003,15 @@ bool s1ap::send_uectxmodifyresp(uint16_t rnti)
|
|||
tx_pdu.set_successful_outcome().load_info_obj(ASN1_S1AP_ID_UE_CONTEXT_MOD);
|
||||
auto& container = tx_pdu.successful_outcome().value.ue_context_mod_request().protocol_ies;
|
||||
|
||||
container.enb_ue_s1ap_id.value = get_user_ctxt(rnti)->MME_UE_S1AP_ID;
|
||||
container.mme_ue_s1ap_id.value = get_user_ctxt(rnti)->eNB_UE_S1AP_ID;
|
||||
container.enb_ue_s1ap_id.value = ctxt.mme_ue_s1ap_id;
|
||||
container.mme_ue_s1ap_id.value = ctxt.enb_ue_s1ap_id;
|
||||
|
||||
return sctp_send_s1ap_pdu(tx_pdu, rnti, "UEContextModificationResponse");
|
||||
return s1ap_ptr->sctp_send_s1ap_pdu(tx_pdu, ctxt.rnti, "UEContextModificationResponse");
|
||||
}
|
||||
|
||||
bool s1ap::send_uectxmodifyfailure(uint16_t rnti, const cause_c& cause)
|
||||
bool s1ap::ue::send_uectxtmodifyfailure(const cause_c& cause)
|
||||
{
|
||||
if (!mme_connected) {
|
||||
if (not s1ap_ptr->mme_connected) {
|
||||
return false;
|
||||
}
|
||||
|
||||
|
@ -1040,11 +1019,11 @@ bool s1ap::send_uectxmodifyfailure(uint16_t rnti, const cause_c& cause)
|
|||
tx_pdu.set_unsuccessful_outcome().load_info_obj(ASN1_S1AP_ID_UE_CONTEXT_MOD);
|
||||
auto& container = tx_pdu.unsuccessful_outcome().value.ue_context_mod_request().protocol_ies;
|
||||
|
||||
container.enb_ue_s1ap_id.value = get_user_ctxt(rnti)->MME_UE_S1AP_ID;
|
||||
container.mme_ue_s1ap_id.value = get_user_ctxt(rnti)->eNB_UE_S1AP_ID;
|
||||
container.enb_ue_s1ap_id.value = ctxt.mme_ue_s1ap_id;
|
||||
container.mme_ue_s1ap_id.value = ctxt.enb_ue_s1ap_id;
|
||||
container.cause.value = cause;
|
||||
|
||||
return sctp_send_s1ap_pdu(tx_pdu, rnti, "UEContextModificationFailure");
|
||||
return s1ap_ptr->sctp_send_s1ap_pdu(tx_pdu, ctxt.rnti, "UEContextModificationFailure");
|
||||
}
|
||||
|
||||
/*********************
|
||||
|
@ -1059,15 +1038,14 @@ bool s1ap::send_ho_required(uint16_t rnti,
|
|||
if (!mme_connected) {
|
||||
return false;
|
||||
}
|
||||
auto it = users.find(rnti);
|
||||
if (it == users.end()) {
|
||||
ue* u = users.find_ue_rnti(rnti);
|
||||
if (u == nullptr) {
|
||||
return false;
|
||||
}
|
||||
|
||||
// launch procedure
|
||||
if (not it->second->get_ho_prep_proc().launch(target_eci, target_plmn, std::move(rrc_container))) {
|
||||
s1ap_log->error("Failed to initiate an HandoverPreparation procedure for user rnti=0x%x\n",
|
||||
it->second->get_ctxt().rnti);
|
||||
if (not u->ho_prep_proc.launch(target_eci, target_plmn, std::move(rrc_container))) {
|
||||
s1ap_log->error("Failed to initiate an HandoverPreparation procedure for user rnti=0x%x\n", u->ctxt.rnti);
|
||||
return false;
|
||||
}
|
||||
return true;
|
||||
|
@ -1078,12 +1056,12 @@ bool s1ap::send_enb_status_transfer_proc(uint16_t rnti, std::vector<bearer_statu
|
|||
if (not mme_connected) {
|
||||
return false;
|
||||
}
|
||||
auto it = users.find(rnti);
|
||||
if (it == users.end()) {
|
||||
ue* u = users.find_ue_rnti(rnti);
|
||||
if (u == nullptr) {
|
||||
return false;
|
||||
}
|
||||
|
||||
return it->second->send_enb_status_transfer_proc(bearer_status_list);
|
||||
return u->send_enb_status_transfer_proc(bearer_status_list);
|
||||
}
|
||||
|
||||
// bool s1ap::send_ue_capabilities(uint16_t rnti, LIBLTE_RRC_UE_EUTRA_CAPABILITY_STRUCT *caps)
|
||||
|
@ -1100,8 +1078,8 @@ bool s1ap::send_enb_status_transfer_proc(uint16_t rnti, std::vector<bearer_statu
|
|||
|
||||
// LIBLTE_S1AP_MESSAGE_UECAPABILITYINFOINDICATION_STRUCT *caps = &init->choice.UECapabilityInfoIndication;
|
||||
// caps->ext = false;
|
||||
// caps->MME_UE_S1AP_ID.MME_UE_S1AP_ID = ue_ctxt_map[rnti]->MME_UE_S1AP_ID;
|
||||
// caps->eNB_UE_S1AP_ID.ENB_UE_S1AP_ID = ue_ctxt_map[rnti]->eNB_UE_S1AP_ID;
|
||||
// caps->mme_ue_s1ap_id.mme_ue_s1ap_id = ue_ctxt_map[rnti]->mme_ue_s1ap_id;
|
||||
// caps->enb_ue_s1ap_id.ENB_UE_S1AP_ID = ue_ctxt_map[rnti]->enb_ue_s1ap_id;
|
||||
// // TODO: caps->UERadioCapability.
|
||||
|
||||
// liblte_s1ap_pack_s1ap_pdu(&tx_pdu, (LIBLTE_BYTE_MSG_STRUCT*)&msg);
|
||||
|
@ -1118,6 +1096,73 @@ bool s1ap::send_enb_status_transfer_proc(uint16_t rnti, std::vector<bearer_statu
|
|||
// return true;
|
||||
//}
|
||||
|
||||
/*********************************************************
|
||||
* s1ap::user_list class
|
||||
*********************************************************/
|
||||
|
||||
s1ap::ue* s1ap::user_list::find_ue_rnti(uint16_t rnti)
|
||||
{
|
||||
if (rnti == ue_ctxt_t::invalid_rnti) {
|
||||
return nullptr;
|
||||
}
|
||||
auto it = std::find_if(
|
||||
users.begin(), users.end(), [rnti](const user_list::pair_type& v) { return v.second->ctxt.rnti == rnti; });
|
||||
return it != users.end() ? it->second.get() : nullptr;
|
||||
}
|
||||
|
||||
s1ap::ue* s1ap::user_list::find_ue_enbid(uint32_t enbid)
|
||||
{
|
||||
auto it = users.find(enbid);
|
||||
return (it != users.end()) ? it->second.get() : nullptr;
|
||||
}
|
||||
|
||||
s1ap::ue* s1ap::user_list::find_ue_mmeid(uint32_t mmeid)
|
||||
{
|
||||
if (mmeid == ue_ctxt_t::invalid_id) {
|
||||
return nullptr;
|
||||
}
|
||||
auto it = std::find_if(users.begin(), users.end(), [mmeid](const user_list::pair_type& v) {
|
||||
return v.second->ctxt.mme_ue_s1ap_id == mmeid;
|
||||
});
|
||||
return it != users.end() ? it->second.get() : nullptr;
|
||||
}
|
||||
|
||||
/**
|
||||
* @brief Adds a user to the user list, avoiding any rnti, enb_s1ap_id, mme_s1ap_id duplication
|
||||
* @param %user to be inserted
|
||||
* @return ptr of inserted %user. If failure, returns nullptr
|
||||
*/
|
||||
s1ap::ue* s1ap::user_list::add_user(std::unique_ptr<s1ap::ue> user)
|
||||
{
|
||||
// Check for ID repetitions
|
||||
if (find_ue_rnti(user->ctxt.rnti) != nullptr) {
|
||||
srslte::logmap::get("S1AP")->error("The user to be added with rnti=0x%x already exists\n", user->ctxt.rnti);
|
||||
return nullptr;
|
||||
}
|
||||
if (find_ue_enbid(user->ctxt.enb_ue_s1ap_id) != nullptr) {
|
||||
srslte::logmap::get("S1AP")->error("The user to be added with enb id=%d already exists\n",
|
||||
user->ctxt.enb_ue_s1ap_id);
|
||||
return nullptr;
|
||||
}
|
||||
if (find_ue_mmeid(user->ctxt.mme_ue_s1ap_id) != nullptr) {
|
||||
srslte::logmap::get("S1AP")->error("The user to be added with mme id=%d already exists\n",
|
||||
user->ctxt.mme_ue_s1ap_id);
|
||||
return nullptr;
|
||||
}
|
||||
auto p = users.insert(std::make_pair(user->ctxt.enb_ue_s1ap_id, std::move(user)));
|
||||
return p.second ? p.first->second.get() : nullptr;
|
||||
}
|
||||
|
||||
void s1ap::user_list::erase(ue* ue_ptr)
|
||||
{
|
||||
auto it = users.find(ue_ptr->ctxt.enb_ue_s1ap_id);
|
||||
if (it == users.end()) {
|
||||
srslte::logmap::get("S1AP")->error("User to be erased does not exist\n");
|
||||
return;
|
||||
}
|
||||
users.erase(it);
|
||||
}
|
||||
|
||||
/*******************************************************************************
|
||||
/* General helpers
|
||||
********************************************************************************/
|
||||
|
@ -1138,7 +1183,7 @@ bool s1ap::sctp_send_s1ap_pdu(const asn1::s1ap::s1ap_pdu_c& tx_pdu, uint32_t rnt
|
|||
} else {
|
||||
s1ap_log->info_hex(buf->msg, buf->N_bytes, "Sending %s to MME", procedure_name);
|
||||
}
|
||||
uint16_t streamid = rnti == 0 ? NONUE_STREAM_ID : get_user_ctxt(rnti)->stream_id;
|
||||
uint16_t streamid = rnti == 0 ? NONUE_STREAM_ID : users.find_ue_rnti(rnti)->stream_id;
|
||||
|
||||
ssize_t n_sent = sctp_sendmsg(s1ap_socket.fd(),
|
||||
buf->msg,
|
||||
|
@ -1161,16 +1206,24 @@ bool s1ap::sctp_send_s1ap_pdu(const asn1::s1ap::s1ap_pdu_c& tx_pdu, uint32_t rnt
|
|||
return true;
|
||||
}
|
||||
|
||||
bool s1ap::find_mme_ue_id(uint32_t mme_ue_id, uint16_t* rnti, uint32_t* enb_ue_id)
|
||||
/**
|
||||
* Helper method to find user based on the enb_ue_s1ap_id stored in an S1AP Msg, and update mme_ue_s1ap_id
|
||||
* @param enb_id enb_ue_s1ap_id value stored in S1AP message
|
||||
* @param mme_id mme_ue_s1ap_id value stored in S1AP message
|
||||
* @return pointer to user if it has been found
|
||||
*/
|
||||
s1ap::ue* s1ap::find_s1apmsg_user(uint32_t enb_id, uint32_t mme_id)
|
||||
{
|
||||
for (auto& it : users) {
|
||||
if (it.second->get_ctxt().MME_UE_S1AP_ID == mme_ue_id) {
|
||||
*rnti = it.second->get_ctxt().rnti;
|
||||
*enb_ue_id = it.second->get_ctxt().eNB_UE_S1AP_ID;
|
||||
return true;
|
||||
}
|
||||
ue* user_ptr = users.find_ue_enbid(enb_id);
|
||||
if (user_ptr == nullptr) {
|
||||
s1ap_log->warning("enb_ue_s1ap_id=%d not found - discarding message\n", enb_id);
|
||||
return nullptr;
|
||||
}
|
||||
return false;
|
||||
if (user_ptr->ctxt.mme_ue_s1ap_id != ue_ctxt_t::invalid_id and user_ptr->ctxt.mme_ue_s1ap_id != mme_id) {
|
||||
s1ap_log->warning("MME_UE_S1AP_ID has changed - old:%d, new:%d\n", user_ptr->ctxt.mme_ue_s1ap_id, mme_id);
|
||||
}
|
||||
user_ptr->ctxt.mme_ue_s1ap_id = mme_id;
|
||||
return user_ptr;
|
||||
}
|
||||
|
||||
std::string s1ap::get_cause(const cause_c& c)
|
||||
|
@ -1200,28 +1253,16 @@ std::string s1ap::get_cause(const cause_c& c)
|
|||
return cause;
|
||||
}
|
||||
|
||||
ue_ctxt_t* s1ap::get_user_ctxt(uint16_t rnti)
|
||||
{
|
||||
auto it = users.find(rnti);
|
||||
if (it == users.end()) {
|
||||
s1ap_log->warning("User rnti=0x%x context not found\n", rnti);
|
||||
return nullptr;
|
||||
}
|
||||
return &it->second->get_ctxt();
|
||||
}
|
||||
|
||||
/*******************************************************************************
|
||||
/* s1ap::ue Class
|
||||
********************************************************************************/
|
||||
|
||||
s1ap::ue::ue(uint16_t rnti_, s1ap* s1ap_ptr_) : s1ap_ptr(s1ap_ptr_), s1ap_log(s1ap_ptr_->s1ap_log), ho_prep_proc(this)
|
||||
s1ap::ue::ue(s1ap* s1ap_ptr_) : s1ap_ptr(s1ap_ptr_), s1ap_log(s1ap_ptr_->s1ap_log), ho_prep_proc(this)
|
||||
{
|
||||
ctxt.rnti = rnti_;
|
||||
ctxt.eNB_UE_S1AP_ID = s1ap_ptr->next_eNB_UE_S1AP_ID++;
|
||||
ctxt.stream_id = 1;
|
||||
ctxt.release_requested = false;
|
||||
ctxt.enb_ue_s1ap_id = s1ap_ptr->next_enb_ue_s1ap_id++;
|
||||
gettimeofday(&ctxt.init_timestamp, nullptr);
|
||||
s1ap_ptr->enbid_to_rnti_map[ctxt.eNB_UE_S1AP_ID] = ctxt.rnti;
|
||||
|
||||
stream_id = s1ap_ptr->next_ue_stream_id++;
|
||||
|
||||
// initialize timers
|
||||
ts1_reloc_prep = s1ap_ptr->timers->get_unique_timer();
|
||||
|
@ -1241,8 +1282,8 @@ bool s1ap::ue::send_ho_required(uint32_t target_eci,
|
|||
ho_required_ies_container& container = tx_pdu.init_msg().value.ho_required().protocol_ies;
|
||||
|
||||
/*** fill HO Required message ***/
|
||||
container.enb_ue_s1ap_id.value = ctxt.eNB_UE_S1AP_ID;
|
||||
container.mme_ue_s1ap_id.value = ctxt.MME_UE_S1AP_ID;
|
||||
container.enb_ue_s1ap_id.value = ctxt.enb_ue_s1ap_id;
|
||||
container.mme_ue_s1ap_id.value = ctxt.mme_ue_s1ap_id;
|
||||
container.direct_forwarding_path_availability_present = false; // NOTE: X2 for fwd path not supported
|
||||
container.handov_type.value.value = handov_type_opts::intralte; // NOTE: only intra-LTE HO supported
|
||||
container.cause.value.set_radio_network().value = cause_radio_network_opts::unspecified;
|
||||
|
@ -1315,8 +1356,8 @@ bool s1ap::ue::send_enb_status_transfer_proc(std::vector<bearer_status_info>& be
|
|||
tx_pdu.set_init_msg().load_info_obj(ASN1_S1AP_ID_ENB_STATUS_TRANSFER);
|
||||
enb_status_transfer_ies_container& container = tx_pdu.init_msg().value.enb_status_transfer().protocol_ies;
|
||||
|
||||
container.enb_ue_s1ap_id.value = ctxt.eNB_UE_S1AP_ID;
|
||||
container.mme_ue_s1ap_id.value = ctxt.MME_UE_S1AP_ID;
|
||||
container.enb_ue_s1ap_id.value = ctxt.enb_ue_s1ap_id;
|
||||
container.mme_ue_s1ap_id.value = ctxt.mme_ue_s1ap_id;
|
||||
|
||||
/* Create StatusTransfer transparent container with all the bearer ctxt to transfer */
|
||||
auto& list = container.enb_status_transfer_transparent_container.value.bearers_subject_to_status_transfer_list;
|
||||
|
|
Loading…
Reference in New Issue