+/**
+ * Set session event meta data
+ *
+ * @param dev_id The device identifier.
+ * @param sess Crypto or security session.
+ * @param op_type Operation type.
+ * @param sess_type Session type.
+ * @param ev_mdata Pointer to the event crypto meta data
+ * (aka *union rte_event_crypto_metadata*)
+ * @param size Size of ev_mdata.
+ *
+ * @return
+ * - On success, zero.
+ * - On failure, a negative value.
+ */
+__rte_experimental
+int
+rte_cryptodev_session_event_mdata_set(uint8_t dev_id, void *sess,
+ enum rte_crypto_op_type op_type,
+ enum rte_crypto_op_sess_type sess_type,
+ void *ev_mdata, uint16_t size);
+