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Linux kernel mirror (for testing) git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051/* 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 */