diff --git a/lib/librte_security/rte_security.h b/lib/librte_security/rte_security.h
index c75c12183a..ca1e91203e 100644
--- a/lib/librte_security/rte_security.h
+++ b/lib/librte_security/rte_security.h
@@ -222,6 +222,8 @@ struct rte_security_ipsec_xform {
 	/**< IPsec SA Mode - transport/tunnel */
 	struct rte_security_ipsec_tunnel_param tunnel;
 	/**< Tunnel parameters, NULL for transport mode */
+	uint64_t esn_soft_limit;
+	/**< ESN for which the overflow event need to be raised */
 };
 
 /**