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/* 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 */

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Name Type Size Permission Actions
addr.h File 4.94 KB 0644
auth.h File 7.43 KB 0644
auth_gss.h File 2.33 KB 0644
bc_xprt.h File 2.42 KB 0644
cache.h File 8.38 KB 0644
clnt.h File 7.17 KB 0644
debug.h File 2.76 KB 0644
gss_api.h File 4.56 KB 0644
gss_asn1.h File 3.11 KB 0644
gss_err.h File 5.93 KB 0644
gss_krb5.h File 11.15 KB 0644
gss_krb5_enctypes.h File 123 B 0644
metrics.h File 3.52 KB 0644
msg_prot.h File 6.23 KB 0644
rpc_pipe_fs.h File 3.92 KB 0644
rpc_rdma.h File 3.81 KB 0644
sched.h File 9.09 KB 0644
stats.h File 2.01 KB 0644
svc.h File 16.55 KB 0644
svc_rdma.h File 7.43 KB 0644
svc_xprt.h File 6.63 KB 0644
svcauth.h File 6.11 KB 0644
svcauth_gss.h File 824 B 0644
svcsock.h File 2.06 KB 0644
timer.h File 1.14 KB 0644
types.h File 497 B 0644
xdr.h File 12.73 KB 0644
xprt.h File 14.77 KB 0644
xprtmultipath.h File 2 KB 0644
xprtrdma.h File 2.9 KB 0644
xprtsock.h File 1.73 KB 0644