\_SB_.PCI0.PHPR
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/*
 *  linux/include/linux/sunrpc/clnt.h
 *
 *  Declarations for the high-level RPC client interface
 *
 *  Copyright (C) 1995, 1996, Olaf Kirch <okir@monad.swb.de>
 */

#ifndef _LINUX_SUNRPC_CLNT_H
#define _LINUX_SUNRPC_CLNT_H

#include <linux/types.h>
#include <linux/socket.h>
#include <linux/in.h>
#include <linux/in6.h>
#include <linux/refcount.h>

#include <linux/sunrpc/msg_prot.h>
#include <linux/sunrpc/sched.h>
#include <linux/sunrpc/xprt.h>
#include <linux/sunrpc/auth.h>
#include <linux/sunrpc/stats.h>
#include <linux/sunrpc/xdr.h>
#include <linux/sunrpc/timer.h>
#include <linux/sunrpc/rpc_pipe_fs.h>
#include <asm/signal.h>
#include <linux/path.h>
#include <net/ipv6.h>
#include <linux/sunrpc/xprtmultipath.h>

struct rpc_inode;
struct rpc_sysfs_client {
	struct kobject kobject;
	struct net *net;
	struct rpc_clnt *clnt;
	struct rpc_xprt_switch *xprt_switch;
};


/*
 * The high-level client handle
 */
struct rpc_clnt {
	refcount_t		cl_count;	/* Number of references */
	unsigned int		cl_clid;	/* client id */
	struct list_head	cl_clients;	/* Global list of clients */
	struct list_head	cl_tasks;	/* List of tasks */
	atomic_t		cl_pid;		/* task PID counter */
	spinlock_t		cl_lock;	/* spinlock */
	struct rpc_xprt __rcu *	cl_xprt;	/* transport */
	const struct rpc_procinfo *cl_procinfo;	/* procedure info */
	u32			cl_prog,	/* RPC program number */
				cl_vers,	/* RPC version number */
				cl_maxproc;	/* max procedure number */

	struct rpc_auth *	cl_auth;	/* authenticator */
	struct rpc_stat *	cl_stats;	/* per-program statistics */
	struct rpc_iostats *	cl_metrics;	/* per-client statistics */

	unsigned int		cl_softrtry : 1,/* soft timeouts */
				cl_softerr  : 1,/* Timeouts return errors */
				cl_discrtry : 1,/* disconnect before retry */
				cl_noretranstimeo: 1,/* No retransmit timeouts */
				cl_autobind : 1,/* use getport() */
				cl_chatty   : 1,/* be verbose */
				cl_shutdown : 1;/* rpc immediate -EIO */
	struct xprtsec_parms	cl_xprtsec;	/* transport security policy */

	struct rpc_rtt *	cl_rtt;		/* RTO estimator data */
	const struct rpc_timeout *cl_timeout;	/* Timeout strategy */

	atomic_t		cl_swapper;	/* swapfile count */
	int			cl_nodelen;	/* nodename length */
	char 			cl_nodename[UNX_MAXNODENAME+1];
	struct rpc_pipe_dir_head cl_pipedir_objects;
	struct rpc_clnt *	cl_parent;	/* Points to parent of clones */
	struct rpc_rtt		cl_rtt_default;
	struct rpc_timeout	cl_timeout_default;
	const struct rpc_program *cl_program;
	const char *		cl_principal;	/* use for machine cred */
#if IS_ENABLED(CONFIG_SUNRPC_DEBUG)
	struct dentry		*cl_debugfs;	/* debugfs directory */
#endif
	struct rpc_sysfs_client *cl_sysfs;	/* sysfs directory */
	/* cl_work is only needed after cl_xpi is no longer used,
	 * and that are of similar size
	 */
	union {
		struct rpc_xprt_iter	cl_xpi;
		struct work_struct	cl_work;
	};
	const struct cred	*cl_cred;
	unsigned int		cl_max_connect; /* max number of transports not to the same IP */
	struct super_block *pipefs_sb;
};

/*
 * General RPC program info
 */
#define RPC_MAXVERSION		4
struct rpc_program {
	const char *		name;		/* protocol name */
	u32			number;		/* program number */
	unsigned int		nrvers;		/* number of versions */
	const struct rpc_version **	version;	/* version array */
	struct rpc_stat *	stats;		/* statistics */
	const char *		pipe_dir_name;	/* path to rpc_pipefs dir */
};

struct rpc_version {
	u32			number;		/* version number */
	unsigned int		nrprocs;	/* number of procs */
	const struct rpc_procinfo *procs;	/* procedure array */
	unsigned int		*counts;	/* call counts */
};

/*
 * Procedure information
 */
struct rpc_procinfo {
	u32			p_proc;		/* RPC procedure number */
	kxdreproc_t		p_encode;	/* XDR encode function */
	kxdrdproc_t		p_decode;	/* XDR decode function */
	unsigned int		p_arglen;	/* argument hdr length (u32) */
	unsigned int		p_replen;	/* reply hdr length (u32) */
	unsigned int		p_timer;	/* Which RTT timer to use */
	u32			p_statidx;	/* Which procedure to account */
	const char *		p_