Rev 423 | Details | Compare with Previous | Last modification | View Log | RSS feed
| Rev | Author | Line No. | Line |
|---|---|---|---|
| 423 | giacomo | 1 | /* |
| 2 | * linux/include/linux/sunrpc/timer.h |
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| 3 | * |
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| 4 | * Declarations for the RPC transport timer. |
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| 5 | * |
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| 6 | * Copyright (C) 2002 Trond Myklebust <trond.myklebust@fys.uio.no> |
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| 7 | */ |
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| 8 | |||
| 9 | #ifndef _LINUX_SUNRPC_TIMER_H |
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| 10 | #define _LINUX_SUNRPC_TIMER_H |
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| 11 | |||
| 12 | #include <asm/atomic.h> |
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| 13 | |||
| 14 | struct rpc_rtt { |
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| 15 | unsigned long timeo; /* default timeout value */ |
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| 16 | unsigned long srtt[5]; /* smoothed round trip time << 3 */ |
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| 17 | unsigned long sdrtt[5]; /* smoothed medium deviation of RTT */ |
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| 18 | int ntimeouts[5]; /* Number of timeouts for the last request */ |
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| 19 | }; |
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| 20 | |||
| 21 | |||
| 22 | extern void rpc_init_rtt(struct rpc_rtt *rt, unsigned long timeo); |
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| 23 | extern void rpc_update_rtt(struct rpc_rtt *rt, unsigned timer, long m); |
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| 24 | extern unsigned long rpc_calc_rto(struct rpc_rtt *rt, unsigned timer); |
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| 25 | |||
| 26 | static inline void rpc_set_timeo(struct rpc_rtt *rt, int timer, int ntimeo) |
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| 27 | { |
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| 28 | if (!timer) |
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| 29 | return; |
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| 30 | rt->ntimeouts[timer-1] = ntimeo; |
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| 31 | } |
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| 32 | |||
| 33 | static inline int rpc_ntimeo(struct rpc_rtt *rt, int timer) |
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| 34 | { |
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| 35 | if (!timer) |
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| 36 | return 0; |
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| 37 | return rt->ntimeouts[timer-1]; |
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| 38 | } |
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| 39 | |||
| 40 | #endif /* _LINUX_SUNRPC_TIMER_H */ |