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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 18:49:45 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 18:49:45 +0000 |
commit | 2c3c1048746a4622d8c89a29670120dc8fab93c4 (patch) | |
tree | 848558de17fb3008cdf4d861b01ac7781903ce39 /include/linux/sunrpc/timer.h | |
parent | Initial commit. (diff) | |
download | linux-2c3c1048746a4622d8c89a29670120dc8fab93c4.tar.xz linux-2c3c1048746a4622d8c89a29670120dc8fab93c4.zip |
Adding upstream version 6.1.76.upstream/6.1.76upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'include/linux/sunrpc/timer.h')
-rw-r--r-- | include/linux/sunrpc/timer.h | 50 |
1 files changed, 50 insertions, 0 deletions
diff --git a/include/linux/sunrpc/timer.h b/include/linux/sunrpc/timer.h new file mode 100644 index 000000000..242dbe00b --- /dev/null +++ b/include/linux/sunrpc/timer.h @@ -0,0 +1,50 @@ +/* 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 */ |