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[/] [test_project/] [trunk/] [linux_sd_driver/] [include/] [linux/] [sunrpc/] [timer.h] - Blame information for rev 62

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Line No. Rev Author Line
1 62 marcus.erl
/*
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 *  linux/include/linux/sunrpc/timer.h
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 *
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 *  Declarations for the RPC transport timer.
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 *
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 *  Copyright (C) 2002 Trond Myklebust <trond.myklebust@fys.uio.no>
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 */
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#ifndef _LINUX_SUNRPC_TIMER_H
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#define _LINUX_SUNRPC_TIMER_H
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#include <asm/atomic.h>
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struct rpc_rtt {
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        unsigned long timeo;    /* default timeout value */
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        unsigned long srtt[5];  /* smoothed round trip time << 3 */
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        unsigned long sdrtt[5]; /* smoothed medium deviation of RTT */
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        int ntimeouts[5];       /* Number of timeouts for the last request */
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};
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extern void rpc_init_rtt(struct rpc_rtt *rt, unsigned long timeo);
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extern void rpc_update_rtt(struct rpc_rtt *rt, unsigned timer, long m);
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extern unsigned long rpc_calc_rto(struct rpc_rtt *rt, unsigned timer);
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static inline void rpc_set_timeo(struct rpc_rtt *rt, int timer, int ntimeo)
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{
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        int *t;
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        if (!timer)
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                return;
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        t = &rt->ntimeouts[timer-1];
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        if (ntimeo < *t) {
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                if (*t > 0)
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                        (*t)--;
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        } else {
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                if (ntimeo > 8)
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                        ntimeo = 8;
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                *t = ntimeo;
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        }
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}
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static inline int rpc_ntimeo(struct rpc_rtt *rt, int timer)
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{
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        if (!timer)
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                return 0;
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        return rt->ntimeouts[timer-1];
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}
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#endif /* _LINUX_SUNRPC_TIMER_H */

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