/* SPDX-License-Identifier: GPL-2.0 *//* *  linux/include/linux/sunrpc/timer.h * *  Declarations for the RPC transport timer. * *  Copyright (C) 2002 Trond Myklebust <trond.myklebust@fys.uio.no> */ #ifndef _LINUX_SUNRPC_TIMER_H#define _LINUX_SUNRPC_TIMER_H #include <linux/atomic.h> struct rpc_rtt {	unsigned long timeo;	/* default timeout value */	unsigned long srtt[5];	/* smoothed round trip time << 3 */	unsigned long sdrtt[5];	/* smoothed medium deviation of RTT */	int ntimeouts[5];	/* Number of timeouts for the last request */};  extern void rpc_init_rtt(struct rpc_rtt *rt, unsigned long timeo);extern void rpc_update_rtt(struct rpc_rtt *rt, unsigned timer, long m);extern unsigned long rpc_calc_rto(struct rpc_rtt *rt, unsigned timer); static inline void rpc_set_timeo(struct rpc_rtt *rt, int timer, int ntimeo){	int *t;	if (!timer)		return;	t = &rt->ntimeouts[timer-1];	if (ntimeo < *t) {		if (*t > 0)			(*t)--;	} else {		if (ntimeo > 8)			ntimeo = 8;		*t = ntimeo;	}} static inline int rpc_ntimeo(struct rpc_rtt *rt, int timer){	if (!timer)		return 0;	return rt->ntimeouts[timer-1];} #endif /* _LINUX_SUNRPC_TIMER_H */