+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef _TC_CORE_H_
+#define _TC_CORE_H_ 1
+
+#include <asm/types.h>
+#include <linux/pkt_sched.h>
+
+#define TIME_UNITS_PER_SEC 1000000
+
+enum link_layer {
+ LINKLAYER_UNSPEC,
+ LINKLAYER_ETHERNET,
+ LINKLAYER_ATM,
+};
+
+
+int tc_core_time2big(unsigned time);
+unsigned tc_core_time2tick(unsigned time);
+unsigned tc_core_tick2time(unsigned tick);
+unsigned tc_core_time2ktime(unsigned time);
+unsigned tc_core_ktime2time(unsigned ktime);
+unsigned tc_calc_xmittime(__u64 rate, unsigned size);
+unsigned tc_calc_xmitsize(__u64 rate, unsigned ticks);
+int tc_calc_rtable(struct tc_ratespec *r, __u32 *rtab,
+ int cell_log, unsigned mtu, enum link_layer link_layer);
+int tc_calc_size_table(struct tc_sizespec *s, __u16 **stab);
+
+int tc_setup_estimator(unsigned A, unsigned time_const, struct tc_estimator *est);
+
+int tc_core_init(void);
+
+extern struct rtnl_handle g_rth;
+extern int is_batch_mode;
+
+#endif