mirror of https://github.com/PentHertz/srsLTE.git
Introducing extended NGAP functionality
Remove unused logger for now in ngap::ue to pass tests
This commit is contained in:
Bedran Karakoc
Bedran Karakoc
parent
5a82a63bb5
commit
c280ac5ad6
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@ -42,17 +42,14 @@ public:
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uint32_t gnb_cc_idx,
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asn1::ngap_nr::rrcestablishment_cause_e cause,
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srsran::unique_byte_buffer_t pdu,
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uint32_t m_tmsi,
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uint8_t mmec) = 0;
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uint32_t m_tmsi) = 0;
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virtual void write_pdu(uint16_t rnti, srsran::unique_byte_buffer_t pdu) = 0;
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virtual bool user_exists(uint16_t rnti) = 0;
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virtual void user_mod(uint16_t old_rnti, uint16_t new_rnti) = 0;
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virtual bool user_release(uint16_t rnti, asn1::ngap_nr::cause_radio_network_e cause_radio) = 0;
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virtual bool is_amf_connected() = 0;
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/// TS 36.413, 8.3.1 - Initial Context Setup
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virtual void ue_ctxt_setup_complete(uint16_t rnti) = 0;
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virtual void ue_ctxt_setup_complete(uint16_t rnti) = 0;
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};
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} // namespace srsenb
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@ -14,6 +14,7 @@
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#include "srsenb/hdr/common/common_enb.h"
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#include "srsran/adt/circular_map.h"
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#include "srsran/adt/optional.h"
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#include "srsran/asn1/asn1_utils.h"
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#include "srsran/asn1/ngap.h"
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#include "srsran/common/bcd_helpers.h"
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@ -27,8 +28,11 @@
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#include "srsran/interfaces/gnb_ngap_interfaces.h"
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#include "srsran/interfaces/gnb_rrc_nr_interfaces.h"
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#include "srsran/srslog/srslog.h"
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#include <iostream>
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#include <unordered_map>
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namespace srsenb {
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class ngap : public ngap_interface_rrc_nr
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{
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public:
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@ -42,21 +46,22 @@ public:
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void initial_ue(uint16_t rnti,
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uint32_t gnb_cc_idx,
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asn1::ngap_nr::rrcestablishment_cause_e cause,
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srsran::unique_byte_buffer_t pdu){};
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srsran::unique_byte_buffer_t pdu);
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void initial_ue(uint16_t rnti,
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uint32_t gnb_cc_idx,
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asn1::ngap_nr::rrcestablishment_cause_e cause,
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srsran::unique_byte_buffer_t pdu,
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uint32_t m_tmsi,
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uint8_t mmec){};
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uint32_t s_tmsi);
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void write_pdu(uint16_t rnti, srsran::unique_byte_buffer_t pdu){};
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bool user_exists(uint16_t rnti) { return true; };
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void user_mod(uint16_t old_rnti, uint16_t new_rnti){};
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bool user_release(uint16_t rnti, asn1::ngap_nr::cause_radio_network_e cause_radio) { return true; };
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bool is_amf_connected();
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/// TS 36.413, 8.3.1 - Initial Context Setup
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void ue_ctxt_setup_complete(uint16_t rnti){};
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bool send_error_indication(const asn1::ngap_nr::cause_c& cause,
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srsran::optional<uint32_t> ran_ue_ngap_id = {},
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srsran::optional<uint32_t> amf_ue_ngap_id = {});
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void ue_ctxt_setup_complete(uint16_t rnti);
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// Stack interface
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bool
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@ -82,7 +87,7 @@ private:
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struct sockaddr_in amf_addr = {}; // AMF address
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bool amf_connected = false;
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bool running = false;
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uint32_t next_enb_ue_ngap_id = 1; // Next ENB-side UE identifier
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uint32_t next_gnb_ue_ngap_id = 1; // Next GNB-side UE identifier
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uint16_t next_ue_stream_id = 1; // Next UE SCTP stream identifier
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srsran::unique_timer amf_connect_timer, ngsetup_timeout;
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@ -90,8 +95,82 @@ private:
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asn1::ngap_nr::tai_s tai;
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asn1::ngap_nr::nr_cgi_s nr_cgi;
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// Moved into NGAP class to avoid redifinition (Introduce new namespace?)
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struct ue_ctxt_t {
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static const uint32_t invalid_gnb_id = std::numeric_limits<uint32_t>::max();
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uint16_t rnti = SRSRAN_INVALID_RNTI;
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uint32_t ran_ue_ngap_id = invalid_gnb_id;
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srsran::optional<uint32_t> amf_ue_ngap_id;
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uint32_t gnb_cc_idx = 0;
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struct timeval init_timestamp = {};
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// AMF identifier
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uint16_t amf_set_id;
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uint8_t amf_pointer;
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uint8_t amf_region_id;
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};
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asn1::ngap_nr::ng_setup_resp_s ngsetupresponse;
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int build_tai_cgi();
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bool connect_amf();
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bool setup_ng();
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bool sctp_send_ngap_pdu(const asn1::ngap_nr::ngap_pdu_c& tx_pdu, uint32_t rnti, const char* procedure_name);
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bool handle_ngap_rx_pdu(srsran::byte_buffer_t* pdu);
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bool handle_successfuloutcome(const asn1::ngap_nr::successful_outcome_s& msg);
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bool handle_unsuccessfuloutcome(const asn1::ngap_nr::unsuccessful_outcome_s& msg);
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bool handle_initiatingmessage(const asn1::ngap_nr::init_msg_s& msg);
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bool handle_dlnastransport(const asn1::ngap_nr::dl_nas_transport_s& msg);
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bool handle_ngsetupresponse(const asn1::ngap_nr::ng_setup_resp_s& msg);
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bool handle_ngsetupfailure(const asn1::ngap_nr::ng_setup_fail_s& msg);
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bool handle_initialctxtsetuprequest(const asn1::ngap_nr::init_context_setup_request_s& msg);
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struct ue {
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explicit ue(ngap* ngap_ptr_);
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bool send_initialuemessage(asn1::ngap_nr::rrcestablishment_cause_e cause,
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srsran::unique_byte_buffer_t pdu,
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bool has_tmsi,
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uint32_t s_tmsi = 0);
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bool send_ulnastransport(srsran::unique_byte_buffer_t pdu);
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bool was_uectxtrelease_requested() const { return release_requested; }
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void ue_ctxt_setup_complete();
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ue_ctxt_t ctxt = {};
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uint16_t stream_id = 1;
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private:
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// args
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ngap* ngap_ptr;
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// state
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bool release_requested = false;
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};
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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_gnbid(uint32_t gnbid);
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ue* find_ue_amfid(uint32_t amfid);
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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 ran_ue_ngap_id to user
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};
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user_list users;
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// procedures
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class ng_setup_proc_t
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{
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@ -114,15 +193,7 @@ private:
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ngap* ngap_ptr = nullptr;
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};
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void build_tai_cgi();
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bool connect_amf();
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bool setup_ng();
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bool sctp_send_ngap_pdu(const asn1::ngap_nr::ngap_pdu_c& tx_pdu, uint32_t rnti, const char* procedure_name);
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bool handle_ngap_rx_pdu(srsran::byte_buffer_t* pdu);
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bool handle_successfuloutcome(const asn1::ngap_nr::successful_outcome_s& msg);
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bool handle_ngsetupresponse(const asn1::ngap_nr::ng_setup_resp_s& msg);
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ue* handle_ngapmsg_ue_id(uint32_t gnb_id, uint32_t amf_id);
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srsran::proc_t<ng_setup_proc_t> ngsetup_proc;
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@ -11,6 +11,10 @@
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*/
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#include "srsenb/hdr/stack/ngap/ngap.h"
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#include "srsran/common/int_helpers.h"
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using srsran::s1ap_mccmnc_to_plmn;
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using srsran::uint32_to_uint8;
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#define procError(fmt, ...) ngap_ptr->logger.error("Proc \"%s\" - " fmt, name(), ##__VA_ARGS__)
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#define procWarning(fmt, ...) ngap_ptr->logger.warning("Proc \"%s\" - " fmt, name(), ##__VA_ARGS__)
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@ -145,20 +149,137 @@ bool ngap::is_amf_connected()
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}
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// Generate common NGAP protocol IEs from config args
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void ngap::build_tai_cgi()
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int ngap::build_tai_cgi()
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{
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uint32_t plmn;
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uint8_t shift;
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// TAI
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srsran::s1ap_mccmnc_to_plmn(args.mcc, args.mnc, &plmn);
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tai.plmn_id.from_number(plmn);
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tai.tac.from_number(args.tac);
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// nr_cgi
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// NR CGI
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nr_cgi.plmn_id.from_number(plmn);
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// TODO Check how to build nr cell id
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nr_cgi.nrcell_id.from_number((uint32_t)(args.gnb_id << 8) | args.cell_id);
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// NR CELL ID (36 bits) = gnb_id (22...32 bits) + cell_id (4...14 bits)
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if (((uint8_t)log2(args.gnb_id) + (uint8_t)log2(args.cell_id) + 2) > 36) {
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logger.error("gNB ID and Cell ID combination greater than 36 bits");
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return SRSRAN_ERROR;
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}
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// Consider moving sanity checks into the parsing function of the configs.
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if (((uint8_t)log2(args.gnb_id) + 1) < 22) {
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shift = 14;
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} else {
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shift = 36 - ((uint8_t)log2(args.gnb_id) + 1);
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}
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nr_cgi.nrcell_id.from_number((uint64_t)args.gnb_id << shift | args.cell_id);
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return SRSRAN_SUCCESS;
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}
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/*******************************************************************************
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/* RRC interface
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********************************************************************************/
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void ngap::initial_ue(uint16_t rnti,
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uint32_t gnb_cc_idx,
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asn1::ngap_nr::rrcestablishment_cause_e cause,
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srsran::unique_byte_buffer_t pdu)
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{
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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_ptr->ctxt.gnb_cc_idx = gnb_cc_idx;
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ue* u = users.add_user(std::move(ue_ptr));
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if (u == nullptr) {
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logger.error("Failed to add rnti=0x%x", 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 ngap::initial_ue(uint16_t rnti,
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uint32_t gnb_cc_idx,
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asn1::ngap_nr::rrcestablishment_cause_e cause,
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srsran::unique_byte_buffer_t pdu,
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uint32_t s_tmsi)
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{
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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_ptr->ctxt.gnb_cc_idx = gnb_cc_idx;
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ue* u = users.add_user(std::move(ue_ptr));
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if (u == nullptr) {
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logger.error("Failed to add rnti=0x%x", rnti);
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return;
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}
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u->send_initialuemessage(cause, std::move(pdu), true, s_tmsi);
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}
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void ngap::ue_ctxt_setup_complete(uint16_t rnti)
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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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u->ue_ctxt_setup_complete();
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}
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/*********************************************************
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* ngap::user_list class
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*********************************************************/
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ngap::ue* ngap::user_list::find_ue_rnti(uint16_t rnti)
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{
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if (rnti == SRSRAN_INVALID_RNTI) {
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return nullptr;
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}
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auto it = std::find_if(
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users.begin(), users.end(), [rnti](const user_list::pair_type& v) { return v.second->ctxt.rnti == rnti; });
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return it != users.end() ? it->second.get() : nullptr;
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}
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ngap::ue* ngap::user_list::find_ue_gnbid(uint32_t gnbid)
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{
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auto it = users.find(gnbid);
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return (it != users.end()) ? it->second.get() : nullptr;
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}
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ngap::ue* ngap::user_list::find_ue_amfid(uint32_t amfid)
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{
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auto it = std::find_if(users.begin(), users.end(), [amfid](const user_list::pair_type& v) {
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return v.second->ctxt.amf_ue_ngap_id == amfid;
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});
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return it != users.end() ? it->second.get() : nullptr;
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}
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ngap::ue* ngap::user_list::add_user(std::unique_ptr<ngap::ue> user)
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{
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static srslog::basic_logger& logger = srslog::fetch_basic_logger("NGAP");
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// Check for ID repetitions
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if (find_ue_rnti(user->ctxt.rnti) != nullptr) {
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logger.error("The user to be added with rnti=0x%x already exists", user->ctxt.rnti);
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return nullptr;
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}
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if (find_ue_gnbid(user->ctxt.ran_ue_ngap_id) != nullptr) {
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logger.error("The user to be added with ran ue ngap id=%d already exists", user->ctxt.ran_ue_ngap_id);
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return nullptr;
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}
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if (user->ctxt.amf_ue_ngap_id.has_value() and find_ue_amfid(user->ctxt.amf_ue_ngap_id.value()) != nullptr) {
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logger.error("The user to be added with amf id=%d already exists", user->ctxt.amf_ue_ngap_id.value());
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return nullptr;
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}
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auto p = users.insert(std::make_pair(user->ctxt.ran_ue_ngap_id, std::move(user)));
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return p.second ? p.first->second.get() : nullptr;
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}
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void ngap::user_list::erase(ue* ue_ptr)
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{
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static srslog::basic_logger& logger = srslog::fetch_basic_logger("NGAP");
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auto it = users.find(ue_ptr->ctxt.ran_ue_ngap_id);
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if (it == users.end()) {
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logger.error("User to be erased does not exist");
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return;
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}
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users.erase(it);
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}
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/*******************************************************************************
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@ -191,11 +312,11 @@ bool ngap::handle_amf_rx_msg(srsran::unique_byte_buffer_t pdu,
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amf_socket.close();
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}
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// Restart MME connection procedure if we lost connection
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// Restart AMF connection procedure if we lost connection
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if (not amf_socket.is_open()) {
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amf_connected = false;
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if (ngsetup_proc.is_busy()) {
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logger.error("Failed to initiate MME connection procedure, as it is already running.");
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logger.error("Failed to initiate AMF connection procedure, as it is already running.");
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return false;
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}
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ngsetup_proc.launch();
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@ -208,6 +329,7 @@ bool ngap::handle_amf_rx_msg(srsran::unique_byte_buffer_t pdu,
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bool ngap::handle_ngap_rx_pdu(srsran::byte_buffer_t* pdu)
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{
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// TODO:
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// Save message to PCAP
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// if (pcap != nullptr) {
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// pcap->write_ngap(pdu->msg, pdu->N_bytes);
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@ -220,18 +342,19 @@ bool ngap::handle_ngap_rx_pdu(srsran::byte_buffer_t* pdu)
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logger.error(pdu->msg, pdu->N_bytes, "Failed to unpack received PDU");
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cause_c cause;
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cause.set_protocol().value = cause_protocol_opts::transfer_syntax_error;
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// send_error_indication(cause);
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send_error_indication(cause);
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return false;
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}
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// TODO:
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// log_ngap_msg(rx_pdu, srsran::make_span(*pdu), true);
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switch (rx_pdu.type().value) {
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// case ngap_pdu_c::types_opts::init_msg:
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// return handle_initiatingmessage(rx_pdu.init_msg());
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case ngap_pdu_c::types_opts::init_msg:
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return handle_initiatingmessage(rx_pdu.init_msg());
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case ngap_pdu_c::types_opts::successful_outcome:
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return handle_successfuloutcome(rx_pdu.successful_outcome());
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// case ngap_pdu_c::types_opts::unsuccessful_outcome:
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// return handle_unsuccessfuloutcome(rx_pdu.unsuccessful_outcome());
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case ngap_pdu_c::types_opts::unsuccessful_outcome:
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return handle_unsuccessfuloutcome(rx_pdu.unsuccessful_outcome());
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default:
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logger.error("Unhandled PDU type %d", rx_pdu.type().value);
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return false;
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@ -240,6 +363,19 @@ bool ngap::handle_ngap_rx_pdu(srsran::byte_buffer_t* pdu)
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return true;
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}
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||||
|
||||
bool ngap::handle_initiatingmessage(const asn1::ngap_nr::init_msg_s& msg)
|
||||
{
|
||||
switch (msg.value.type().value) {
|
||||
case ngap_elem_procs_o::init_msg_c::types_opts::dl_nas_transport:
|
||||
return handle_dlnastransport(msg.value.dl_nas_transport());
|
||||
case ngap_elem_procs_o::init_msg_c::types_opts::init_context_setup_request:
|
||||
return handle_initialctxtsetuprequest(msg.value.init_context_setup_request());
|
||||
default:
|
||||
logger.error("Unhandled initiating message: %s", msg.value.type().to_string());
|
||||
}
|
||||
return true;
|
||||
}
|
||||
|
||||
bool ngap::handle_successfuloutcome(const successful_outcome_s& msg)
|
||||
{
|
||||
switch (msg.value.type().value) {
|
||||
|
|
@ -251,6 +387,17 @@ bool ngap::handle_successfuloutcome(const successful_outcome_s& msg)
|
|||
return true;
|
||||
}
|
||||
|
||||
bool ngap::handle_unsuccessfuloutcome(const asn1::ngap_nr::unsuccessful_outcome_s& msg)
|
||||
{
|
||||
switch (msg.value.type().value) {
|
||||
case ngap_elem_procs_o::unsuccessful_outcome_c::types_opts::ng_setup_fail:
|
||||
return handle_ngsetupfailure(msg.value.ng_setup_fail());
|
||||
default:
|
||||
logger.error("Unhandled unsuccessful outcome message: %s", msg.value.type().to_string());
|
||||
}
|
||||
return true;
|
||||
}
|
||||
|
||||
bool ngap::handle_ngsetupresponse(const asn1::ngap_nr::ng_setup_resp_s& msg)
|
||||
{
|
||||
ngsetupresponse = msg;
|
||||
|
|
@ -258,6 +405,93 @@ bool ngap::handle_ngsetupresponse(const asn1::ngap_nr::ng_setup_resp_s& msg)
|
|||
ng_setup_proc_t::ngsetupresult res;
|
||||
res.success = true;
|
||||
ngsetup_proc.trigger(res);
|
||||
|
||||
return true;
|
||||
}
|
||||
|
||||
bool ngap::handle_ngsetupfailure(const asn1::ngap_nr::ng_setup_fail_s& msg)
|
||||
{
|
||||
std::string cause = get_cause(msg.protocol_ies.cause.value);
|
||||
logger.error("NG Setup Failure. Cause: %s", cause.c_str());
|
||||
srsran::console("NG Setup Failure. Cause: %s\n", cause.c_str());
|
||||
return true;
|
||||
}
|
||||
|
||||
bool ngap::handle_dlnastransport(const asn1::ngap_nr::dl_nas_transport_s& msg)
|
||||
{
|
||||
if (msg.ext) {
|
||||
logger.warning("Not handling NGAP message extension");
|
||||
}
|
||||
ue* u =
|
||||
handle_ngapmsg_ue_id(msg.protocol_ies.ran_ue_ngap_id.value.value, msg.protocol_ies.amf_ue_ngap_id.value.value);
|
||||
if (u == nullptr) {
|
||||
return false;
|
||||
}
|
||||
|
||||
if (msg.protocol_ies.old_amf_present) {
|
||||
logger.warning("Not handling OldAMF");
|
||||
}
|
||||
|
||||
if (msg.protocol_ies.ran_paging_prio_present) {
|
||||
logger.warning("Not handling RANPagingPriority");
|
||||
}
|
||||
|
||||
if (msg.protocol_ies.mob_restrict_list_present) {
|
||||
logger.warning("Not handling MobilityRestrictionList");
|
||||
}
|
||||
|
||||
if (msg.protocol_ies.idx_to_rfsp_present) {
|
||||
logger.warning("Not handling IndexToRFSP");
|
||||
}
|
||||
|
||||
if (msg.protocol_ies.ue_aggregate_maximum_bit_rate_present) {
|
||||
logger.warning("Not handling UEAggregateMaximumBitRate");
|
||||
}
|
||||
|
||||
if (msg.protocol_ies.allowed_nssai_present) {
|
||||
logger.warning("Not handling AllowedNSSAI");
|
||||
}
|
||||
|
||||
// TODO: Pass NAS PDU once RRC interface is ready
|
||||
/* srsran::unique_byte_buffer_t pdu = srsran::make_byte_buffer();
|
||||
if (pdu == nullptr) {
|
||||
logger.error("Fatal Error: Couldn't allocate buffer in ngap::run_thread().");
|
||||
return false;
|
||||
}
|
||||
memcpy(pdu->msg, msg.protocol_ies.nas_pdu.value.data(), msg.protocol_ies.nas_pdu.value.size());
|
||||
pdu->N_bytes = msg.protocol_ies.nas_pdu.value.size();
|
||||
rrc->write_dl_info(u->ctxt.rnti, std::move(pdu)); */
|
||||
return true;
|
||||
}
|
||||
|
||||
bool ngap::handle_initialctxtsetuprequest(const asn1::ngap_nr::init_context_setup_request_s& msg)
|
||||
{
|
||||
ue* u =
|
||||
handle_ngapmsg_ue_id(msg.protocol_ies.ran_ue_ngap_id.value.value, msg.protocol_ies.amf_ue_ngap_id.value.value);
|
||||
if (u == nullptr) {
|
||||
return false;
|
||||
}
|
||||
|
||||
u->ctxt.amf_pointer = msg.protocol_ies.guami.value.amf_pointer.to_number();
|
||||
u->ctxt.amf_set_id = msg.protocol_ies.guami.value.amf_set_id.to_number();
|
||||
u->ctxt.amf_region_id = msg.protocol_ies.guami.value.amf_region_id.to_number();
|
||||
|
||||
// Setup UE ctxt in RRC once interface is ready
|
||||
/* if (not rrc->setup_ue_ctxt(u->ctxt.rnti, msg)) {
|
||||
return false;
|
||||
} */
|
||||
|
||||
/* if (msg.protocol_ies.nas_pdu_present) {
|
||||
srsran::unique_byte_buffer_t pdu = srsran::make_byte_buffer();
|
||||
if (pdu == nullptr) {
|
||||
logger.error("Fatal Error: Couldn't allocate buffer in ngap::run_thread().");
|
||||
return false;
|
||||
}
|
||||
memcpy(pdu->msg, msg.protocol_ies.nas_pdu.value.data(), msg.protocol_ies.nas_pdu.value.size());
|
||||
pdu->N_bytes = msg.protocol_ies.nas_pdu.value.size();
|
||||
rrc->write_dl_info(u->ctxt.rnti, std::move(pdu));
|
||||
} */
|
||||
|
||||
return true;
|
||||
}
|
||||
|
||||
|
|
@ -344,6 +578,134 @@ bool ngap::setup_ng()
|
|||
return sctp_send_ngap_pdu(pdu, 0, "ngSetupRequest");
|
||||
}
|
||||
|
||||
/*******************************************************************************
|
||||
/* NGAP message senders
|
||||
********************************************************************************/
|
||||
|
||||
bool ngap::ue::send_initialuemessage(asn1::ngap_nr::rrcestablishment_cause_e cause,
|
||||
srsran::unique_byte_buffer_t pdu,
|
||||
bool has_tmsi,
|
||||
uint32_t s_tmsi)
|
||||
{
|
||||
if (not ngap_ptr->amf_connected) {
|
||||
return false;
|
||||
}
|
||||
|
||||
ngap_pdu_c tx_pdu;
|
||||
tx_pdu.set_init_msg().load_info_obj(ASN1_NGAP_NR_ID_INIT_UE_MSG);
|
||||
init_ue_msg_ies_container& container = tx_pdu.init_msg().value.init_ue_msg().protocol_ies;
|
||||
|
||||
// 5G-S-TMSI
|
||||
if (has_tmsi) {
|
||||
container.five_g_s_tmsi_present = true;
|
||||
srsran::uint32_to_uint8(s_tmsi, container.five_g_s_tmsi.value.five_g_tmsi.data());
|
||||
container.five_g_s_tmsi.value.amf_set_id.from_number(ctxt.amf_set_id);
|
||||
container.five_g_s_tmsi.value.amf_pointer.from_number(ctxt.amf_pointer);
|
||||
}
|
||||
|
||||
// RAN_UE_NGAP_ID
|
||||
container.ran_ue_ngap_id.value = ctxt.ran_ue_ngap_id;
|
||||
|
||||
// NAS_PDU
|
||||
container.nas_pdu.value.resize(pdu->N_bytes);
|
||||
memcpy(container.nas_pdu.value.data(), pdu->msg, pdu->N_bytes);
|
||||
|
||||
// RRC Establishment Cause
|
||||
container.rrcestablishment_cause.value = cause;
|
||||
|
||||
// User Location Info
|
||||
|
||||
// userLocationInformationNR
|
||||
container.user_location_info.value.set_user_location_info_nr();
|
||||
container.user_location_info.value.user_location_info_nr().nr_cgi.nrcell_id = ngap_ptr->nr_cgi.nrcell_id;
|
||||
container.user_location_info.value.user_location_info_nr().nr_cgi.plmn_id = ngap_ptr->nr_cgi.plmn_id;
|
||||
container.user_location_info.value.user_location_info_nr().tai.plmn_id = ngap_ptr->tai.plmn_id;
|
||||
container.user_location_info.value.user_location_info_nr().tai.tac = ngap_ptr->tai.tac;
|
||||
|
||||
return ngap_ptr->sctp_send_ngap_pdu(tx_pdu, ctxt.rnti, "InitialUEMessage");
|
||||
}
|
||||
|
||||
bool ngap::ue::send_ulnastransport(srsran::unique_byte_buffer_t pdu)
|
||||
{
|
||||
if (not ngap_ptr->amf_connected) {
|
||||
return false;
|
||||
}
|
||||
|
||||
ngap_pdu_c tx_pdu;
|
||||
tx_pdu.set_init_msg().load_info_obj(ASN1_NGAP_NR_ID_UL_NAS_TRANSPORT);
|
||||
asn1::ngap_nr::ul_nas_transport_ies_container& container = tx_pdu.init_msg().value.ul_nas_transport().protocol_ies;
|
||||
|
||||
// AMF UE NGAP ID
|
||||
container.amf_ue_ngap_id.value = ctxt.amf_ue_ngap_id.value();
|
||||
|
||||
// RAN UE NGAP ID
|
||||
container.ran_ue_ngap_id.value = ctxt.ran_ue_ngap_id;
|
||||
|
||||
// NAS PDU
|
||||
container.nas_pdu.value.resize(pdu->N_bytes);
|
||||
memcpy(container.nas_pdu.value.data(), pdu->msg, pdu->N_bytes);
|
||||
|
||||
// User Location Info
|
||||
// userLocationInformationNR
|
||||
container.user_location_info.value.set_user_location_info_nr();
|
||||
container.user_location_info.value.user_location_info_nr().nr_cgi.nrcell_id = ngap_ptr->nr_cgi.nrcell_id;
|
||||
container.user_location_info.value.user_location_info_nr().nr_cgi.plmn_id = ngap_ptr->nr_cgi.plmn_id;
|
||||
container.user_location_info.value.user_location_info_nr().tai.plmn_id = ngap_ptr->tai.plmn_id;
|
||||
container.user_location_info.value.user_location_info_nr().tai.tac = ngap_ptr->tai.tac;
|
||||
|
||||
return ngap_ptr->sctp_send_ngap_pdu(tx_pdu, ctxt.rnti, "UplinkNASTransport");
|
||||
}
|
||||
|
||||
void ngap::ue::ue_ctxt_setup_complete()
|
||||
{
|
||||
ngap_pdu_c tx_pdu;
|
||||
// Handle PDU Session List once RRC interface is ready
|
||||
tx_pdu.set_successful_outcome().load_info_obj(ASN1_NGAP_NR_ID_INIT_CONTEXT_SETUP);
|
||||
auto& container = tx_pdu.successful_outcome().value.init_context_setup_resp().protocol_ies;
|
||||
}
|
||||
|
||||
bool ngap::send_error_indication(const asn1::ngap_nr::cause_c& cause,
|
||||
srsran::optional<uint32_t> ran_ue_ngap_id,
|
||||
srsran::optional<uint32_t> amf_ue_ngap_id)
|
||||
{
|
||||
if (not amf_connected) {
|
||||
return false;
|
||||
}
|
||||
|
||||
ngap_pdu_c tx_pdu;
|
||||
tx_pdu.set_init_msg().load_info_obj(ASN1_NGAP_NR_ID_ERROR_IND);
|
||||
auto& container = tx_pdu.init_msg().value.error_ind().protocol_ies;
|
||||
|
||||
uint16_t rnti = SRSRAN_INVALID_RNTI;
|
||||
container.ran_ue_ngap_id_present = ran_ue_ngap_id.has_value();
|
||||
if (ran_ue_ngap_id.has_value()) {
|
||||
container.ran_ue_ngap_id.value = ran_ue_ngap_id.value();
|
||||
ue* user_ptr = users.find_ue_gnbid(ran_ue_ngap_id.value());
|
||||
rnti = user_ptr != nullptr ? user_ptr->ctxt.rnti : SRSRAN_INVALID_RNTI;
|
||||
}
|
||||
container.amf_ue_ngap_id_present = amf_ue_ngap_id.has_value();
|
||||
if (amf_ue_ngap_id.has_value()) {
|
||||
container.amf_ue_ngap_id.value = amf_ue_ngap_id.value();
|
||||
}
|
||||
|
||||
container.cause_present = true;
|
||||
container.cause.value = cause;
|
||||
|
||||
return sctp_send_ngap_pdu(tx_pdu, rnti, "Error Indication");
|
||||
}
|
||||
|
||||
/*******************************************************************************
|
||||
/* ngap::ue Class
|
||||
********************************************************************************/
|
||||
|
||||
ngap::ue::ue(ngap* ngap_ptr_) : ngap_ptr(ngap_ptr_)
|
||||
{
|
||||
ctxt.ran_ue_ngap_id = ngap_ptr->next_gnb_ue_ngap_id++;
|
||||
gettimeofday(&ctxt.init_timestamp, nullptr);
|
||||
|
||||
stream_id = ngap_ptr->next_ue_stream_id;
|
||||
}
|
||||
|
||||
/*******************************************************************************
|
||||
/* General helpers
|
||||
********************************************************************************/
|
||||
|
|
@ -374,14 +736,14 @@ bool ngap::sctp_send_ngap_pdu(const asn1::ngap_nr::ngap_pdu_c& tx_pdu, uint32_t
|
|||
// }
|
||||
|
||||
if (rnti != SRSRAN_INVALID_RNTI) {
|
||||
logger.info(buf->msg, buf->N_bytes, "Tx S1AP SDU, %s, rnti=0x%x", procedure_name, rnti);
|
||||
logger.info(buf->msg, buf->N_bytes, "Tx NGAP SDU, %s, rnti=0x%x", procedure_name, rnti);
|
||||
} else {
|
||||
logger.info(buf->msg, buf->N_bytes, "Tx S1AP SDU, %s", procedure_name);
|
||||
logger.info(buf->msg, buf->N_bytes, "Tx NGAP SDU, %s", procedure_name);
|
||||
}
|
||||
// TODO: when user list is ready
|
||||
// uint16_t streamid = rnti == SRSRAN_INVALID_RNTI ? NONUE_STREAM_ID : users.find_ue_rnti(rnti)->stream_id;
|
||||
uint16_t streamid = 0;
|
||||
ssize_t n_sent = sctp_sendmsg(amf_socket.fd(),
|
||||
|
||||
uint16_t streamid = rnti == SRSRAN_INVALID_RNTI ? NONUE_STREAM_ID : users.find_ue_rnti(rnti)->stream_id;
|
||||
|
||||
ssize_t n_sent = sctp_sendmsg(amf_socket.fd(),
|
||||
buf->msg,
|
||||
buf->N_bytes,
|
||||
(struct sockaddr*)&amf_addr,
|
||||
|
|
@ -393,13 +755,87 @@ bool ngap::sctp_send_ngap_pdu(const asn1::ngap_nr::ngap_pdu_c& tx_pdu, uint32_t
|
|||
0);
|
||||
if (n_sent == -1) {
|
||||
if (rnti != SRSRAN_INVALID_RNTI) {
|
||||
logger.error("Error: Failure at Tx S1AP SDU, %s, rnti=0x%x", procedure_name, rnti);
|
||||
logger.error("Error: Failure at Tx NGAP SDU, %s, rnti=0x%x", procedure_name, rnti);
|
||||
} else {
|
||||
logger.error("Error: Failure at Tx S1AP SDU, %s", procedure_name);
|
||||
logger.error("Error: Failure at Tx NGAP SDU, %s", procedure_name);
|
||||
}
|
||||
return false;
|
||||
}
|
||||
return true;
|
||||
}
|
||||
|
||||
/**
|
||||
* Helper method to find user based on the ran_ue_ngap_id stored in an S1AP Msg, and update amf_ue_ngap_id
|
||||
* @param gnb_id ran_ue_ngap_id value stored in NGAP message
|
||||
* @param amf_id amf_ue_ngap_id value stored in NGAP message
|
||||
* @return pointer to user if it has been found
|
||||
*/
|
||||
ngap::ue* ngap::handle_ngapmsg_ue_id(uint32_t gnb_id, uint32_t amf_id)
|
||||
{
|
||||
ue* user_ptr = users.find_ue_gnbid(gnb_id);
|
||||
ue* user_amf_ptr = nullptr;
|
||||
cause_c cause;
|
||||
// TODO: Introduce proper error handling for faulty ids
|
||||
if (user_ptr != nullptr) {
|
||||
if (user_ptr->ctxt.amf_ue_ngap_id == amf_id) {
|
||||
return user_ptr;
|
||||
}
|
||||
|
||||
user_amf_ptr = users.find_ue_amfid(amf_id);
|
||||
if (not user_ptr->ctxt.amf_ue_ngap_id.has_value() and user_amf_ptr == nullptr) {
|
||||
user_ptr->ctxt.amf_ue_ngap_id = amf_id;
|
||||
return user_ptr;
|
||||
}
|
||||
|
||||
logger.warning("AMF UE NGAP ID=%d not found - discarding message", amf_id);
|
||||
if (user_amf_ptr != nullptr) {
|
||||
cause.set_radio_network().value = cause_radio_network_opts::unknown_target_id;
|
||||
}
|
||||
|
||||
} else {
|
||||
user_amf_ptr = users.find_ue_amfid(amf_id);
|
||||
logger.warning("RAN UE NGAP ID=%d not found - discarding message", gnb_id);
|
||||
if (user_amf_ptr != nullptr) {
|
||||
cause.set_radio_network().value = cause_radio_network_opts::unknown_local_ue_ngap_id;
|
||||
}
|
||||
}
|
||||
|
||||
send_error_indication(cause, gnb_id, amf_id);
|
||||
|
||||
if (user_ptr != nullptr) {
|
||||
// rrc->release_ue(user_ptr->ctxt.rnti);
|
||||
}
|
||||
if (user_amf_ptr != nullptr and user_amf_ptr != user_ptr) {
|
||||
// rrc->release_ue(user_mme_ptr->ctxt.rnti);
|
||||
}
|
||||
return nullptr;
|
||||
}
|
||||
|
||||
std::string ngap::get_cause(const cause_c& c)
|
||||
{
|
||||
std::string cause = c.type().to_string();
|
||||
cause += " - ";
|
||||
switch (c.type().value) {
|
||||
case cause_c::types_opts::radio_network:
|
||||
cause += c.radio_network().to_string();
|
||||
break;
|
||||
case cause_c::types_opts::transport:
|
||||
cause += c.transport().to_string();
|
||||
break;
|
||||
case cause_c::types_opts::nas:
|
||||
cause += c.nas().to_string();
|
||||
break;
|
||||
case cause_c::types_opts::protocol:
|
||||
cause += c.protocol().to_string();
|
||||
break;
|
||||
case cause_c::types_opts::misc:
|
||||
cause += c.misc().to_string();
|
||||
break;
|
||||
default:
|
||||
cause += "unknown";
|
||||
break;
|
||||
}
|
||||
return cause;
|
||||
}
|
||||
|
||||
} // namespace srsenb
|
||||
|
|
|
|||
|
|
@ -11,6 +11,7 @@ add_subdirectory(phy)
|
|||
add_subdirectory(upper)
|
||||
add_subdirectory(rrc)
|
||||
add_subdirectory(s1ap)
|
||||
add_subdirectory(ngap)
|
||||
|
||||
add_executable(enb_metrics_test enb_metrics_test.cc ../src/metrics_stdout.cc ../src/metrics_csv.cc)
|
||||
target_link_libraries(enb_metrics_test srsran_phy srsran_common)
|
||||
|
|
|
|||
|
|
@ -0,0 +1,13 @@
|
|||
#
|
||||
# Copyright 2013-2021 Software Radio Systems Limited
|
||||
#
|
||||
# By using this file, you agree to the terms and conditions set
|
||||
# forth in the LICENSE file which can be found at the top level of
|
||||
# the distribution.
|
||||
#
|
||||
|
||||
add_executable(ngap_test ngap_test.cc)
|
||||
target_link_libraries(ngap_test srsran_common ngap_nr_asn1 srsenb_upper srsran_upper ngap_nr_asn1 srsgnb_upper srsgnb_ngap ${SCTP_LIBRARIES})
|
||||
|
||||
add_test(ngap_test ngap_test)
|
||||
|
||||
|
|
@ -0,0 +1,152 @@
|
|||
/**
|
||||
*
|
||||
* \section COPYRIGHT
|
||||
*
|
||||
* Copyright 2013-2021 Software Radio Systems Limited
|
||||
*
|
||||
* By using this file, you agree to the terms and conditions set
|
||||
* forth in the LICENSE file which can be found at the top level of
|
||||
* the distribution.
|
||||
*
|
||||
*/
|
||||
|
||||
#include "srsenb/hdr/stack/ngap/ngap.h"
|
||||
#include "srsran/common/network_utils.h"
|
||||
#include "srsran/common/test_common.h"
|
||||
|
||||
using namespace srsenb;
|
||||
|
||||
struct amf_dummy {
|
||||
amf_dummy(const char* addr_str_, int port_) : addr_str(addr_str_), port(port_)
|
||||
{
|
||||
srsran::net_utils::set_sockaddr(&amf_sockaddr, addr_str, port);
|
||||
{
|
||||
using namespace srsran::net_utils;
|
||||
fd = open_socket(addr_family::ipv4, socket_type::seqpacket, protocol_type::SCTP);
|
||||
TESTASSERT(fd > 0);
|
||||
TESTASSERT(bind_addr(fd, amf_sockaddr));
|
||||
}
|
||||
|
||||
int success = listen(fd, SOMAXCONN);
|
||||
srsran_assert(success == 0, "Failed to listen to incoming SCTP connections");
|
||||
}
|
||||
|
||||
~amf_dummy()
|
||||
{
|
||||
if (fd > 0) {
|
||||
close(fd);
|
||||
}
|
||||
}
|
||||
|
||||
srsran::unique_byte_buffer_t read_msg(sockaddr_in* sockfrom = nullptr)
|
||||
{
|
||||
srsran::unique_byte_buffer_t pdu = srsran::make_byte_buffer();
|
||||
sockaddr_in from = {};
|
||||
socklen_t fromlen = sizeof(from);
|
||||
sctp_sndrcvinfo sri = {};
|
||||
int flags = 0;
|
||||
ssize_t n_recv = sctp_recvmsg(fd, pdu->msg, pdu->get_tailroom(), (struct sockaddr*)&from, &fromlen, &sri, &flags);
|
||||
if (n_recv > 0) {
|
||||
if (sockfrom != nullptr) {
|
||||
*sockfrom = from;
|
||||
}
|
||||
pdu->N_bytes = n_recv;
|
||||
}
|
||||
return pdu;
|
||||
}
|
||||
|
||||
const char* addr_str;
|
||||
int port;
|
||||
struct sockaddr_in amf_sockaddr = {};
|
||||
int fd;
|
||||
srsran::unique_byte_buffer_t last_sdu;
|
||||
};
|
||||
|
||||
struct dummy_socket_manager : public srsran::socket_manager_itf {
|
||||
dummy_socket_manager() : srsran::socket_manager_itf(srslog::fetch_basic_logger("TEST")) {}
|
||||
|
||||
/// Register (fd, callback). callback is called within socket thread when fd has data.
|
||||
bool add_socket_handler(int fd, recv_callback_t handler) final
|
||||
{
|
||||
if (s1u_fd > 0) {
|
||||
return false;
|
||||
}
|
||||
s1u_fd = fd;
|
||||
callback = std::move(handler);
|
||||
return true;
|
||||
}
|
||||
|
||||
/// remove registered socket fd
|
||||
bool remove_socket(int fd) final
|
||||
{
|
||||
if (s1u_fd < 0) {
|
||||
return false;
|
||||
}
|
||||
s1u_fd = -1;
|
||||
return true;
|
||||
}
|
||||
|
||||
int s1u_fd;
|
||||
recv_callback_t callback;
|
||||
};
|
||||
|
||||
void run_ng_setup(ngap& ngap_obj, amf_dummy& amf)
|
||||
{
|
||||
asn1::ngap_nr::ngap_pdu_c ngap_pdu;
|
||||
|
||||
// gNB -> AMF: NG Setup Request
|
||||
srsran::unique_byte_buffer_t sdu = amf.read_msg();
|
||||
TESTASSERT(sdu->N_bytes > 0);
|
||||
asn1::cbit_ref cbref(sdu->msg, sdu->N_bytes);
|
||||
TESTASSERT(ngap_pdu.unpack(cbref) == asn1::SRSASN_SUCCESS);
|
||||
TESTASSERT(ngap_pdu.type().value == asn1::ngap_nr::ngap_pdu_c::types_opts::init_msg);
|
||||
TESTASSERT(ngap_pdu.init_msg().proc_code == ASN1_NGAP_NR_ID_NG_SETUP);
|
||||
|
||||
// AMF -> gNB: ng Setup Response
|
||||
sockaddr_in amf_addr = {};
|
||||
sctp_sndrcvinfo rcvinfo = {};
|
||||
int flags = 0;
|
||||
|
||||
uint8_t ng_setup_resp[] = {0x20, 0x15, 0x00, 0x55, 0x00, 0x00, 0x04, 0x00, 0x01, 0x00, 0x31, 0x17, 0x00, 0x61, 0x6d,
|
||||
0x61, 0x72, 0x69, 0x73, 0x6f, 0x66, 0x74, 0x2e, 0x61, 0x6d, 0x66, 0x2e, 0x35, 0x67, 0x63,
|
||||
0x2e, 0x6d, 0x6e, 0x63, 0x30, 0x30, 0x31, 0x2e, 0x6d, 0x63, 0x63, 0x30, 0x30, 0x31, 0x2e,
|
||||
0x33, 0x67, 0x70, 0x70, 0x6e, 0x65, 0x74, 0x77, 0x6f, 0x72, 0x6b, 0x2e, 0x6f, 0x72, 0x67,
|
||||
0x00, 0x60, 0x00, 0x08, 0x00, 0x00, 0x00, 0xf1, 0x10, 0x80, 0x01, 0x01, 0x00, 0x56, 0x40,
|
||||
0x01, 0x32, 0x00, 0x50, 0x00, 0x08, 0x00, 0x00, 0xf1, 0x10, 0x00, 0x00, 0x00, 0x08};
|
||||
memcpy(sdu->msg, ng_setup_resp, sizeof(ng_setup_resp));
|
||||
sdu->N_bytes = sizeof(ng_setup_resp);
|
||||
TESTASSERT(ngap_obj.handle_amf_rx_msg(std::move(sdu), amf_addr, rcvinfo, flags));
|
||||
}
|
||||
|
||||
int main(int argc, char** argv)
|
||||
{
|
||||
// Setup logging.
|
||||
auto& logger = srslog::fetch_basic_logger("NGAP");
|
||||
logger.set_level(srslog::basic_levels::debug);
|
||||
logger.set_hex_dump_max_size(-1);
|
||||
|
||||
srsran::task_scheduler task_sched;
|
||||
dummy_socket_manager rx_sockets;
|
||||
ngap ngap_obj(&task_sched, logger, &rx_sockets);
|
||||
|
||||
const char* amf_addr_str = "127.0.0.1";
|
||||
const uint32_t AMF_PORT = 38412;
|
||||
amf_dummy amf(amf_addr_str, AMF_PORT);
|
||||
|
||||
ngap_args_t args = {};
|
||||
args.cell_id = 0x01;
|
||||
args.gnb_id = 0x19B;
|
||||
args.mcc = 907;
|
||||
args.mnc = 70;
|
||||
args.ngc_bind_addr = "127.0.0.100";
|
||||
args.tac = 7;
|
||||
args.gtp_bind_addr = "127.0.0.100";
|
||||
args.amf_addr = amf_addr_str;
|
||||
args.gnb_name = "srsgnb01";
|
||||
rrc_interface_ngap_nr rrc;
|
||||
ngap_obj.init(args, &rrc);
|
||||
|
||||
// Start the log backend.
|
||||
srsran::test_init(argc, argv);
|
||||
run_ng_setup(ngap_obj, amf);
|
||||
}
|
||||
Loading…
Reference in New Issue