diff --git a/smc_fuzz/include/fifo3d.h b/smc_fuzz/include/fifo3d.h
index c04567c..95ebb4a 100644
--- a/smc_fuzz/include/fifo3d.h
+++ b/smc_fuzz/include/fifo3d.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2020, Arm Limited. All rights reserved.
+ * Copyright (c) 2024, Arm Limited. All rights reserved.
  *
  * SPDX-License-Identifier: BSD-3-Clause
  */
@@ -18,22 +18,28 @@
 	char ***nnfifo;
 	char ***fnamefifo;
 	int **biasfifo;
+	int **fidfifo;
 	int col;
 	int curr_col;
 	int *row;
 };
 
 /*
- * Push function name string into raw data structure
+ * Push function name string into the raw data structure
  */
 void push_3dfifo_fname(struct fifo3d *f3d, char *fname);
 
 /*
- * Push bias value into raw data structure
+ * Push bias value into the raw data structure
  */
 void push_3dfifo_bias(struct fifo3d *f3d, int bias);
 
 /*
+ * Push id for function value into the raw data structure
+ */
+void push_3dfifo_fid(struct fifo3d *f3d, int id);
+
+/*
  * Create new column and/or row for raw data structure for newly
  * found node from device tree
  */