Subscriber and Server register their internal errors in the global transport perf counter object

libuavcan/include/uavcan/node/generic_subscriber.hpp

@@ -151,6 +151,7 @@ class GenericSubscriber : Noncopyable
             UAVCAN_TRACE("GenericSubscriber", "Unable to decode the message [%i] [%s]",
                          decode_res, DataSpec::getDataTypeFullName());
             failure_count_++;
+            node_.getDispatcher().getTransferPerfCounter().addError();
             return false;
         }
         return true;

libuavcan/include/uavcan/node/service_server.hpp

@@ -68,6 +68,7 @@ private:
         if (res < 0)
         {
             UAVCAN_TRACE("ServiceServer", "Response publication failure: %i", res);
+            publisher_.getNode().getDispatcher().getTransferPerfCounter().addError();
             response_failure_count_++;
         }
     }