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@ -11,6 +11,7 @@
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*/
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#include "srsenb/hdr/stack/ngap/ngap.h"
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#include "srsenb/hdr/stack/ngap/ngap_ue.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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@ -102,6 +103,8 @@ ngap::ngap(srsran::task_sched_handle task_sched_,
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amf_task_queue = task_sched.make_task_queue();
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}
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ngap::~ngap() {}
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int ngap::init(const ngap_args_t& args_, rrc_interface_ngap_nr* rrc_)
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{
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rrc = rrc_;
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@ -204,7 +207,7 @@ void ngap::initial_ue(uint16_t rnti,
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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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std::unique_ptr<ue> ue_ptr{new ue{this, rrc, logger}};
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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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@ -212,7 +215,7 @@ void ngap::initial_ue(uint16_t rnti,
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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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u->send_initial_ue_message(cause, std::move(pdu), false);
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}
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void ngap::initial_ue(uint16_t rnti,
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@ -221,7 +224,7 @@ void ngap::initial_ue(uint16_t rnti,
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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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std::unique_ptr<ue> ue_ptr{new ue{this, rrc, logger}};
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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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@ -229,7 +232,7 @@ void ngap::initial_ue(uint16_t rnti,
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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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u->send_initial_ue_message(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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@ -241,6 +244,27 @@ void ngap::ue_ctxt_setup_complete(uint16_t rnti)
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u->ue_ctxt_setup_complete();
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}
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void ngap::ue_notify_rrc_reconf_complete(uint16_t rnti, bool outcome)
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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->notify_rrc_reconf_complete(outcome);
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}
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void ngap::write_pdu(uint16_t rnti, srsran::unique_byte_buffer_t pdu)
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{
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logger.info(pdu->msg, pdu->N_bytes, "Received RRC SDU");
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ue* u = users.find_ue_rnti(rnti);
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if (u == nullptr) {
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logger.info("The rnti=0x%x does not exist", rnti);
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return;
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}
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u->send_ul_nas_transport(std::move(pdu));
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}
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/*********************************************************
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* ngap::user_list class
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*********************************************************/
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@ -368,11 +392,11 @@ bool ngap::handle_ngap_rx_pdu(srsran::byte_buffer_t* pdu)
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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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return handle_initiating_message(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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return handle_successful_outcome(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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return handle_unsuccessful_outcome(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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@ -381,42 +405,44 @@ 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)
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bool ngap::handle_initiating_message(const asn1::ngap_nr::init_msg_s& msg)
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{
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switch (msg.value.type().value) {
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case ngap_elem_procs_o::init_msg_c::types_opts::dl_nas_transport:
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return handle_dlnastransport(msg.value.dl_nas_transport());
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return handle_dl_nas_transport(msg.value.dl_nas_transport());
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case ngap_elem_procs_o::init_msg_c::types_opts::init_context_setup_request:
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return handle_initialctxtsetuprequest(msg.value.init_context_setup_request());
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return handle_initial_ctxt_setup_request(msg.value.init_context_setup_request());
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case ngap_elem_procs_o::init_msg_c::types_opts::ue_context_release_cmd:
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return handle_ue_ctxt_release_cmd(msg.value.ue_context_release_cmd());
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default:
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logger.error("Unhandled initiating message: %s", msg.value.type().to_string());
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}
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return true;
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}
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bool ngap::handle_successfuloutcome(const successful_outcome_s& msg)
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bool ngap::handle_successful_outcome(const successful_outcome_s& msg)
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{
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switch (msg.value.type().value) {
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case ngap_elem_procs_o::successful_outcome_c::types_opts::ng_setup_resp:
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return handle_ngsetupresponse(msg.value.ng_setup_resp());
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return handle_ng_setup_response(msg.value.ng_setup_resp());
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default:
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logger.error("Unhandled successful outcome message: %s", msg.value.type().to_string());
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}
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return true;
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}
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bool ngap::handle_unsuccessfuloutcome(const asn1::ngap_nr::unsuccessful_outcome_s& msg)
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bool ngap::handle_unsuccessful_outcome(const asn1::ngap_nr::unsuccessful_outcome_s& msg)
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{
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switch (msg.value.type().value) {
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case ngap_elem_procs_o::unsuccessful_outcome_c::types_opts::ng_setup_fail:
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return handle_ngsetupfailure(msg.value.ng_setup_fail());
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return handle_ng_setup_failure(msg.value.ng_setup_fail());
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default:
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logger.error("Unhandled unsuccessful outcome message: %s", msg.value.type().to_string());
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}
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return true;
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}
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bool ngap::handle_ngsetupresponse(const asn1::ngap_nr::ng_setup_resp_s& msg)
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bool ngap::handle_ng_setup_response(const asn1::ngap_nr::ng_setup_resp_s& msg)
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{
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ngsetupresponse = msg;
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amf_connected = true;
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@ -427,7 +453,7 @@ bool ngap::handle_ngsetupresponse(const asn1::ngap_nr::ng_setup_resp_s& msg)
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return true;
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}
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bool ngap::handle_ngsetupfailure(const asn1::ngap_nr::ng_setup_fail_s& msg)
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bool ngap::handle_ng_setup_failure(const asn1::ngap_nr::ng_setup_fail_s& msg)
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{
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std::string cause = get_cause(msg.protocol_ies.cause.value);
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logger.error("NG Setup Failure. Cause: %s", cause.c_str());
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@ -435,14 +461,18 @@ bool ngap::handle_ngsetupfailure(const asn1::ngap_nr::ng_setup_fail_s& msg)
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return true;
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}
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bool ngap::handle_dlnastransport(const asn1::ngap_nr::dl_nas_transport_s& msg)
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bool ngap::handle_dl_nas_transport(const asn1::ngap_nr::dl_nas_transport_s& msg)
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{
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if (msg.ext) {
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logger.warning("Not handling NGAP message extension");
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}
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ue* u =
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handle_ngapmsg_ue_id(msg.protocol_ies.ran_ue_ngap_id.value.value, msg.protocol_ies.amf_ue_ngap_id.value.value);
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if (u == nullptr) {
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logger.warning("Couldn't find user with ran_ue_ngap_id %d and %d",
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msg.protocol_ies.ran_ue_ngap_id.value.value,
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msg.protocol_ies.amf_ue_ngap_id.value.value);
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return false;
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}
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@ -470,49 +500,79 @@ bool ngap::handle_dlnastransport(const asn1::ngap_nr::dl_nas_transport_s& msg)
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logger.warning("Not handling AllowedNSSAI");
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}
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// TODO: Pass NAS PDU once RRC interface is ready
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/* srsran::unique_byte_buffer_t pdu = srsran::make_byte_buffer();
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srsran::unique_byte_buffer_t pdu = srsran::make_byte_buffer();
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if (pdu == nullptr) {
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logger.error("Fatal Error: Couldn't allocate buffer in ngap::run_thread().");
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return false;
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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();
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rrc->write_dl_info(u->ctxt.rnti, std::move(pdu)); */
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rrc->write_dl_info(u->ctxt.rnti, std::move(pdu));
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return true;
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}
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bool ngap::handle_initialctxtsetuprequest(const asn1::ngap_nr::init_context_setup_request_s& msg)
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bool ngap::handle_initial_ctxt_setup_request(const asn1::ngap_nr::init_context_setup_request_s& msg)
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{
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ue* u =
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handle_ngapmsg_ue_id(msg.protocol_ies.ran_ue_ngap_id.value.value, msg.protocol_ies.amf_ue_ngap_id.value.value);
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if (u == nullptr) {
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logger.warning("Can not find UE");
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return false;
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}
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u->ctxt.amf_pointer = msg.protocol_ies.guami.value.amf_pointer.to_number();
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u->ctxt.amf_set_id = msg.protocol_ies.guami.value.amf_set_id.to_number();
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u->ctxt.amf_region_id = msg.protocol_ies.guami.value.amf_region_id.to_number();
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u->handle_initial_ctxt_setup_request(msg);
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// Setup UE ctxt in RRC once interface is ready
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/* if (not rrc->setup_ue_ctxt(u->ctxt.rnti, msg)) {
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return false;
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} */
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return true;
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}
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/* if (msg.protocol_ies.nas_pdu_present) {
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srsran::unique_byte_buffer_t pdu = srsran::make_byte_buffer();
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if (pdu == nullptr) {
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logger.error("Fatal Error: Couldn't allocate buffer in ngap::run_thread().");
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return false;
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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();
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rrc->write_dl_info(u->ctxt.rnti, std::move(pdu));
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} */
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bool ngap::handle_ue_ctxt_release_cmd(const asn1::ngap_nr::ue_context_release_cmd_s& msg)
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{
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// TODO: UE Context Release Command contains a list of ue_ngap_ids
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return true;
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}
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bool ngap::handle_pdu_session_resource_setup_request(const asn1::ngap_nr::pdu_session_res_setup_request_s& msg)
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{
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// TODO
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logger.warning("Not implemented yet");
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return true;
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}
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/*******************************************************************************
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/* NGAP message senders
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********************************************************************************/
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bool ngap::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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{
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if (amf_connected == false) {
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logger.warning("AMF not connected.");
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return false;
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}
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ngap_pdu_c tx_pdu;
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tx_pdu.set_init_msg().load_info_obj(ASN1_NGAP_NR_ID_ERROR_IND);
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auto& container = tx_pdu.init_msg().value.error_ind().protocol_ies;
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uint16_t rnti = SRSRAN_INVALID_RNTI;
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container.ran_ue_ngap_id_present = ran_ue_ngap_id.has_value();
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if (ran_ue_ngap_id.has_value()) {
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container.ran_ue_ngap_id.value = ran_ue_ngap_id.value();
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ue* user_ptr = users.find_ue_gnbid(ran_ue_ngap_id.value());
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rnti = user_ptr != nullptr ? user_ptr->ctxt.rnti : SRSRAN_INVALID_RNTI;
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}
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container.amf_ue_ngap_id_present = amf_ue_ngap_id.has_value();
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if (amf_ue_ngap_id.has_value()) {
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container.amf_ue_ngap_id.value = amf_ue_ngap_id.value();
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}
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container.cause_present = true;
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container.cause.value = cause;
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return sctp_send_ngap_pdu(tx_pdu, rnti, "Error Indication");
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}
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/*******************************************************************************
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/* NGAP connection helpers
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********************************************************************************/
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@ -596,134 +656,6 @@ bool ngap::setup_ng()
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return sctp_send_ngap_pdu(pdu, 0, "ngSetupRequest");
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}
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/*******************************************************************************
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/* NGAP message senders
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********************************************************************************/
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bool ngap::ue::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)
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{
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if (not ngap_ptr->amf_connected) {
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return false;
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}
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ngap_pdu_c tx_pdu;
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tx_pdu.set_init_msg().load_info_obj(ASN1_NGAP_NR_ID_INIT_UE_MSG);
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init_ue_msg_ies_container& container = tx_pdu.init_msg().value.init_ue_msg().protocol_ies;
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// 5G-S-TMSI
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if (has_tmsi) {
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container.five_g_s_tmsi_present = true;
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srsran::uint32_to_uint8(s_tmsi, container.five_g_s_tmsi.value.five_g_tmsi.data());
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container.five_g_s_tmsi.value.amf_set_id.from_number(ctxt.amf_set_id);
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container.five_g_s_tmsi.value.amf_pointer.from_number(ctxt.amf_pointer);
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}
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// RAN_UE_NGAP_ID
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container.ran_ue_ngap_id.value = ctxt.ran_ue_ngap_id;
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// NAS_PDU
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container.nas_pdu.value.resize(pdu->N_bytes);
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memcpy(container.nas_pdu.value.data(), pdu->msg, pdu->N_bytes);
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// RRC Establishment Cause
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container.rrcestablishment_cause.value = cause;
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// User Location Info
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// userLocationInformationNR
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container.user_location_info.value.set_user_location_info_nr();
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container.user_location_info.value.user_location_info_nr().nr_cgi.nrcell_id = ngap_ptr->nr_cgi.nrcell_id;
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container.user_location_info.value.user_location_info_nr().nr_cgi.plmn_id = ngap_ptr->nr_cgi.plmn_id;
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container.user_location_info.value.user_location_info_nr().tai.plmn_id = ngap_ptr->tai.plmn_id;
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container.user_location_info.value.user_location_info_nr().tai.tac = ngap_ptr->tai.tac;
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return ngap_ptr->sctp_send_ngap_pdu(tx_pdu, ctxt.rnti, "InitialUEMessage");
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}
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bool ngap::ue::send_ulnastransport(srsran::unique_byte_buffer_t pdu)
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{
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if (not ngap_ptr->amf_connected) {
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return false;
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}
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ngap_pdu_c tx_pdu;
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tx_pdu.set_init_msg().load_info_obj(ASN1_NGAP_NR_ID_UL_NAS_TRANSPORT);
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asn1::ngap_nr::ul_nas_transport_ies_container& container = tx_pdu.init_msg().value.ul_nas_transport().protocol_ies;
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// AMF UE NGAP ID
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container.amf_ue_ngap_id.value = ctxt.amf_ue_ngap_id.value();
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// RAN UE NGAP ID
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container.ran_ue_ngap_id.value = ctxt.ran_ue_ngap_id;
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// NAS PDU
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container.nas_pdu.value.resize(pdu->N_bytes);
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memcpy(container.nas_pdu.value.data(), pdu->msg, pdu->N_bytes);
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// User Location Info
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// userLocationInformationNR
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container.user_location_info.value.set_user_location_info_nr();
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container.user_location_info.value.user_location_info_nr().nr_cgi.nrcell_id = ngap_ptr->nr_cgi.nrcell_id;
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container.user_location_info.value.user_location_info_nr().nr_cgi.plmn_id = ngap_ptr->nr_cgi.plmn_id;
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container.user_location_info.value.user_location_info_nr().tai.plmn_id = ngap_ptr->tai.plmn_id;
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container.user_location_info.value.user_location_info_nr().tai.tac = ngap_ptr->tai.tac;
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return ngap_ptr->sctp_send_ngap_pdu(tx_pdu, ctxt.rnti, "UplinkNASTransport");
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}
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void ngap::ue::ue_ctxt_setup_complete()
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|
|
{
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|
|
ngap_pdu_c tx_pdu;
|
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|
|
// Handle PDU Session List once RRC interface is ready
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tx_pdu.set_successful_outcome().load_info_obj(ASN1_NGAP_NR_ID_INIT_CONTEXT_SETUP);
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auto& container = tx_pdu.successful_outcome().value.init_context_setup_resp().protocol_ies;
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}
|
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|
bool ngap::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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|
|
{
|
|
|
|
|
if (not amf_connected) {
|
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|
|
|
return false;
|
|
|
|
|
}
|
|
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|
|
|
|
|
|
|
ngap_pdu_c tx_pdu;
|
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|
|
|
tx_pdu.set_init_msg().load_info_obj(ASN1_NGAP_NR_ID_ERROR_IND);
|
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|
|
auto& container = tx_pdu.init_msg().value.error_ind().protocol_ies;
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|
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|
|
uint16_t rnti = SRSRAN_INVALID_RNTI;
|
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|
|
container.ran_ue_ngap_id_present = ran_ue_ngap_id.has_value();
|
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|
|
if (ran_ue_ngap_id.has_value()) {
|
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|
|
|
container.ran_ue_ngap_id.value = ran_ue_ngap_id.value();
|
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|
|
ue* user_ptr = users.find_ue_gnbid(ran_ue_ngap_id.value());
|
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|
|
rnti = user_ptr != nullptr ? user_ptr->ctxt.rnti : SRSRAN_INVALID_RNTI;
|
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|
|
|
}
|
|
|
|
|
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
|
|
|
|
|
********************************************************************************/
|
|
|
|
|
|
Bedran Karakoc
3 years ago
committed by
Bedran Karakoc