init-version-3.27

2025-08-12 14:15:27 +08:00
parent 85f22d2098
commit a2d7a353d8
4264 changed files with 625612 additions and 1 deletions
--- a/src/gnb/ngap/task.cpp
+++ b/src/gnb/ngap/task.cpp
@@ -0,0 +1,108 @@
+//
+// This file is a part of UERANSIM project.
+// Copyright (c) 2023 ALİ GÜNGÖR.
+//
+// https://github.com/aligungr/UERANSIM/
+// See README, LICENSE, and CONTRIBUTING files for licensing details.
+//
+
+#include "task.hpp"
+
+#include <sstream>
+
+#include <gnb/app/task.hpp>
+#include <gnb/sctp/task.hpp>
+
+namespace nr::gnb
+{
+
+NgapTask::NgapTask(TaskBase *base) : m_base{base}, m_ueNgapIdCounter{}, m_downlinkTeidCounter{}, m_isInitialized{}
+{
+    m_logger = base->logBase->makeUniqueLogger("ngap");
+}
+
+void NgapTask::onStart()
+{
+    for (auto &amfConfig : m_base->config->amfConfigs)
+        createAmfContext(amfConfig);
+    if (m_amfCtx.empty())
+        m_logger->warn("No AMF configuration is provided");
+
+    for (auto &amfCtx : m_amfCtx)
+    {
+        auto msg = std::make_unique<NmGnbSctp>(NmGnbSctp::CONNECTION_REQUEST);
+        msg->clientId = amfCtx.second->ctxId;
+        msg->localAddress = m_base->config->ngapIp;
+        msg->localPort = 0;
+        msg->remoteAddress = amfCtx.second->address;
+        msg->remotePort = amfCtx.second->port;
+        msg->ppid = sctp::PayloadProtocolId::NGAP;
+        msg->associatedTask = this;
+        m_base->sctpTask->push(std::move(msg));
+    }
+}
+
+void NgapTask::onLoop()
+{
+    auto msg = take();
+    if (!msg)
+        return;
+
+    switch (msg->msgType)
+    {
+    case NtsMessageType::GNB_RRC_TO_NGAP: {
+        auto &w = dynamic_cast<NmGnbRrcToNgap &>(*msg);
+        switch (w.present)
+        {
+        case NmGnbRrcToNgap::INITIAL_NAS_DELIVERY: {
+            handleInitialNasTransport(w.ueId, w.pdu, w.rrcEstablishmentCause, w.sTmsi);
+            break;
+        }
+        case NmGnbRrcToNgap::UPLINK_NAS_DELIVERY: {
+            handleUplinkNasTransport(w.ueId, w.pdu);
+            break;
+        }
+        case NmGnbRrcToNgap::RADIO_LINK_FAILURE: {
+            handleRadioLinkFailure(w.ueId);
+            break;
+        }
+        }
+        break;
+    }
+    case NtsMessageType::GNB_SCTP: {
+        auto &w = dynamic_cast<NmGnbSctp &>(*msg);
+        switch (w.present)
+        {
+        case NmGnbSctp::ASSOCIATION_SETUP:
+            handleAssociationSetup(w.clientId, w.associationId, w.inStreams, w.outStreams);
+            break;
+        case NmGnbSctp::RECEIVE_MESSAGE:
+            handleSctpMessage(w.clientId, w.stream, w.buffer);
+            break;
+        case NmGnbSctp::ASSOCIATION_SHUTDOWN:
+            handleAssociationShutdown(w.clientId);
+            break;
+        default:
+            m_logger->unhandledNts(*msg);
+            break;
+        }
+        break;
+    }
+    default: {
+        m_logger->unhandledNts(*msg);
+        break;
+    }
+    }
+}
+
+void NgapTask::onQuit()
+{
+    for (auto &i : m_ueCtx)
+        delete i.second;
+    for (auto &i : m_amfCtx)
+        delete i.second;
+    m_ueCtx.clear();
+    m_amfCtx.clear();
+}
+
+} // namespace nr::gnb