You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
49 lines
1.1 KiB
49 lines
1.1 KiB
/*
|
|
* 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 <asm/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 */
|
|
|