[ncp] integrate SRP Server and Advertising Proxy for NCP

.github/workflows/ncp_mode.yml

@@ -76,6 +76,6 @@ jobs:
             --build-arg OTBR_OPTIONS="${OTBR_OPTIONS}"
     - name: Run
       run: |
-       top_builddir="./build/temp" tests/scripts/ncp_mode build_ot_sim expect
+        top_builddir="./build/temp" tests/scripts/ncp_mode build_ot_sim expect
     - name: Codecov
       uses: codecov/codecov-action@v5

src/agent/application.cpp

@@ -288,14 +288,22 @@ void Application::DeinitRcpMode(void)
 
 void Application::InitNcpMode(void)
 {
+#if OTBR_ENABLE_MDNS
+    otbr::Ncp::NcpHost &ncpHost = static_cast<otbr::Ncp::NcpHost &>(mHost);
+    ncpHost.SetMdnsPublisher(mPublisher.get());
+    mMdnsStateSubject.AddObserver(ncpHost);
+    mPublisher->Start();
+#endif
 #if OTBR_ENABLE_DBUS_SERVER
     mDBusAgent->Init(*mBorderAgent);
 #endif
 }
 
 void Application::DeinitNcpMode(void)
 {
-    /* empty */
+#if OTBR_ENABLE_MDNS
+    mPublisher->Stop();
+#endif
 }
 
 } // namespace otbr

src/ncp/CMakeLists.txt

@@ -43,6 +43,7 @@ add_library(otbr-ncp
 
 target_link_libraries(otbr-ncp PRIVATE
     otbr-common
+    otbr-mdns
     otbr-posix
     $<$<BOOL:${OTBR_FEATURE_FLAGS}>:otbr-proto>
     $<$<BOOL:${OTBR_TELEMETRY_DATA_API}>:otbr-proto>

src/ncp/ncp_host.cpp

@@ -134,6 +134,16 @@ void NcpHost::Init(void)
     {
         mInfraIf.SetInfraIf(mConfig.mBackboneInterfaceName);
     }
+
+#if OTBR_ENABLE_SRP_ADVERTISING_PROXY
+#if OTBR_ENABLE_SRP_SERVER_AUTO_ENABLE_MODE
+    // Let SRP server use auto-enable mode. The auto-enable mode delegates the control of SRP server to the Border
+    // Routing Manager. SRP server automatically starts when bi-directional connectivity is ready.
+    mNcpSpinel.SrpServerSetAutoEnableMode(/* aEnabled */ true);
+#else
+    mNcpSpinel.SrpServerSetEnabled(/* aEnabled */ true);
+#endif
+#endif
 }
 
 void NcpHost::Deinit(void)
@@ -255,5 +265,15 @@ void NcpHost::Update(MainloopContext &aMainloop)
     mNetif.UpdateFdSet(&aMainloop);
 }
 
+void NcpHost::SetMdnsPublisher(otbr::Mdns::Publisher *aPublisher)
+{
+    mNcpSpinel.SetMdnsPublisher(aPublisher);
+}
+
+void NcpHost::HandleMdnsState(otbr::Mdns::Publisher::State aState)
+{
+    mNcpSpinel.DnssdSetState(aState);
+}
+
 } // namespace Ncp
 } // namespace otbr

src/ncp/ncp_host.hpp

@@ -38,6 +38,7 @@
 #include "lib/spinel/spinel_driver.hpp"
 
 #include "common/mainloop.hpp"
+#include "mdns/mdns.hpp"
 #include "ncp/ncp_spinel.hpp"
 #include "ncp/thread_host.hpp"
 #include "posix/netif.hpp"
@@ -72,7 +73,7 @@ class NcpNetworkProperties : virtual public NetworkProperties, public PropsObser
     otOperationalDatasetTlvs mDatasetActiveTlvs;
 };
 
-class NcpHost : public MainloopProcessor, public ThreadHost, public NcpNetworkProperties
+class NcpHost : public MainloopProcessor, public ThreadHost, public NcpNetworkProperties, public Mdns::StateObserver
 {
 public:
     /**
@@ -119,7 +120,11 @@ class NcpHost : public MainloopProcessor, public ThreadHost, public NcpNetworkPr
     void Update(MainloopContext &aMainloop) override;
     void Process(const MainloopContext &aMainloop) override;
 
+    void SetMdnsPublisher(otbr::Mdns::Publisher *aPublisher);
+
 private:
+    void HandleMdnsState(otbr::Mdns::Publisher::State aState) override;
+
     ot::Spinel::SpinelDriver &mSpinelDriver;
     otPlatformConfig          mConfig;
     NcpSpinel                 mNcpSpinel;