[border-router] add RA message dump for testing (#6567)

src/core/border_router/routing_manager.cpp

@@ -757,6 +757,9 @@ void RoutingManager::SendRouterAdvertisement(const Ip6::Prefix *aNewOmrPrefixes,
         if (error == kErrorNone)
         {
             otLogInfoBr("sent Router Advertisement on interface %u", mInfraIfIndex);
+#if OPENTHREAD_CONFIG_REFERENCE_DEVICE_ENABLE
+            otDumpCertBr("[BR-CERT] direction=send | type=RA |", buffer, bufferLength);
+#endif
         }
         else
         {
@@ -918,6 +921,9 @@ void RoutingManager::HandleRouterAdvertisement(const Ip6::Address &aSrcAddress,
 
     otLogInfoBr("received Router Advertisement from %s on interface %u", aSrcAddress.ToString().AsCString(),
                 mInfraIfIndex);
+#if OPENTHREAD_CONFIG_REFERENCE_DEVICE_ENABLE
+    otDumpCertBr("[BR-CERT] direction=recv | type=RA |", aBuffer, aBufferLength);
+#endif
 
     routerAdvMessage = reinterpret_cast<const RouterAdvMessage *>(aBuffer);
     optionsBegin     = aBuffer + sizeof(RouterAdvMessage);

src/core/common/logging.hpp

@@ -2462,7 +2462,7 @@ void otLogOtns(const char *aFormat, ...);
 #endif
 
 /**
- * @def otDumpCert
+ * @def otDumpCertMeshCoP
  *
  * This function generates a memory dump with log level none for the certification test.
  *
@@ -2477,6 +2477,22 @@ void otLogOtns(const char *aFormat, ...);
 #define otDumpCertMeshCoP(aId, aBuf, aLength)
 #endif
 
+/**
+ * @def otDumpCertBr
+ *
+ * This function generates a memory dump with log level none for the BR certification test.
+ *
+ * @param[in]  aId          A pointer to a NULL-terminated string that is printed before the bytes.
+ * @param[in]  aBuf         A pointer to the buffer.
+ * @param[in]  aLength      Number of bytes to print.
+ *
+ */
+#if OPENTHREAD_CONFIG_REFERENCE_DEVICE_ENABLE
+#define otDumpCertBr(aId, aBuf, aLength) otDump(OT_LOG_LEVEL_NONE, OT_LOG_REGION_BR, aId, aBuf, aLength)
+#else
+#define otDumpCertBr(aId, aBuf, aLength)
+#endif
+
 /**
  * This function dumps bytes to the log in a human-readable fashion.
  *