2 * linux/include/linux/sunrpc/clnt.h
4 * Declarations for the high-level RPC client interface
6 * Copyright (C) 1995, 1996, Olaf Kirch <okir@monad.swb.de>
9 #ifndef _LINUX_SUNRPC_CLNT_H
10 #define _LINUX_SUNRPC_CLNT_H
12 #include <linux/types.h>
13 #include <linux/socket.h>
15 #include <linux/in6.h>
17 #include <linux/sunrpc/msg_prot.h>
18 #include <linux/sunrpc/sched.h>
19 #include <linux/sunrpc/xprt.h>
20 #include <linux/sunrpc/auth.h>
21 #include <linux/sunrpc/stats.h>
22 #include <linux/sunrpc/xdr.h>
23 #include <linux/sunrpc/timer.h>
24 #include <asm/signal.h>
25 #include <linux/path.h>
31 * The high-level client handle
34 atomic_t cl_count
; /* Number of references */
35 struct list_head cl_clients
; /* Global list of clients */
36 struct list_head cl_tasks
; /* List of tasks */
37 spinlock_t cl_lock
; /* spinlock */
38 struct rpc_xprt __rcu
* cl_xprt
; /* transport */
39 struct rpc_procinfo
* cl_procinfo
; /* procedure info */
40 u32 cl_prog
, /* RPC program number */
41 cl_vers
, /* RPC version number */
42 cl_maxproc
; /* max procedure number */
44 const char * cl_protname
; /* protocol name */
45 struct rpc_auth
* cl_auth
; /* authenticator */
46 struct rpc_stat
* cl_stats
; /* per-program statistics */
47 struct rpc_iostats
* cl_metrics
; /* per-client statistics */
49 unsigned int cl_softrtry
: 1,/* soft timeouts */
50 cl_discrtry
: 1,/* disconnect before retry */
51 cl_autobind
: 1,/* use getport() */
52 cl_chatty
: 1;/* be verbose */
54 struct rpc_rtt
* cl_rtt
; /* RTO estimator data */
55 const struct rpc_timeout
*cl_timeout
; /* Timeout strategy */
57 int cl_nodelen
; /* nodename length */
58 char cl_nodename
[UNX_MAXNODENAME
];
59 struct dentry
* cl_dentry
;
60 struct rpc_clnt
* cl_parent
; /* Points to parent of clones */
61 struct rpc_rtt cl_rtt_default
;
62 struct rpc_timeout cl_timeout_default
;
63 const struct rpc_program
*cl_program
;
64 char *cl_principal
; /* target to authenticate to */
68 * General RPC program info
70 #define RPC_MAXVERSION 4
72 const char * name
; /* protocol name */
73 u32 number
; /* program number */
74 unsigned int nrvers
; /* number of versions */
75 const struct rpc_version
** version
; /* version array */
76 struct rpc_stat
* stats
; /* statistics */
77 const char * pipe_dir_name
; /* path to rpc_pipefs dir */
81 u32 number
; /* version number */
82 unsigned int nrprocs
; /* number of procs */
83 struct rpc_procinfo
* procs
; /* procedure array */
87 * Procedure information
90 u32 p_proc
; /* RPC procedure number */
91 kxdreproc_t p_encode
; /* XDR encode function */
92 kxdrdproc_t p_decode
; /* XDR decode function */
93 unsigned int p_arglen
; /* argument hdr length (u32) */
94 unsigned int p_replen
; /* reply hdr length (u32) */
95 unsigned int p_count
; /* call count */
96 unsigned int p_timer
; /* Which RTT timer to use */
97 u32 p_statidx
; /* Which procedure to account */
98 const char * p_name
; /* name of procedure */
103 struct rpc_create_args
{
106 struct sockaddr
*address
;
108 struct sockaddr
*saddress
;
109 const struct rpc_timeout
*timeout
;
110 const char *servername
;
111 const struct rpc_program
*program
;
112 u32 prognumber
; /* overrides program->number */
114 rpc_authflavor_t authflavor
;
117 struct svc_xprt
*bc_xprt
; /* NFSv4.1 backchannel */
120 /* Values for "flags" field */
121 #define RPC_CLNT_CREATE_HARDRTRY (1UL << 0)
122 #define RPC_CLNT_CREATE_AUTOBIND (1UL << 2)
123 #define RPC_CLNT_CREATE_NONPRIVPORT (1UL << 3)
124 #define RPC_CLNT_CREATE_NOPING (1UL << 4)
125 #define RPC_CLNT_CREATE_DISCRTRY (1UL << 5)
126 #define RPC_CLNT_CREATE_QUIET (1UL << 6)
128 struct rpc_clnt
*rpc_create(struct rpc_create_args
*args
);
129 struct rpc_clnt
*rpc_bind_new_program(struct rpc_clnt
*,
130 const struct rpc_program
*, u32
);
131 void rpc_task_reset_client(struct rpc_task
*task
, struct rpc_clnt
*clnt
);
132 struct rpc_clnt
*rpc_clone_client(struct rpc_clnt
*);
133 struct rpc_clnt
*rpc_clone_client_set_auth(struct rpc_clnt
*,
135 void rpc_shutdown_client(struct rpc_clnt
*);
136 void rpc_release_client(struct rpc_clnt
*);
137 void rpc_task_release_client(struct rpc_task
*);
139 int rpcb_create_local(struct net
*);
140 void rpcb_put_local(struct net
*);
141 int rpcb_register(struct net
*, u32
, u32
, int, unsigned short);
142 int rpcb_v4_register(struct net
*net
, const u32 program
,
144 const struct sockaddr
*address
,
146 void rpcb_getport_async(struct rpc_task
*);
148 void rpc_call_start(struct rpc_task
*);
149 int rpc_call_async(struct rpc_clnt
*clnt
,
150 const struct rpc_message
*msg
, int flags
,
151 const struct rpc_call_ops
*tk_ops
,
153 int rpc_call_sync(struct rpc_clnt
*clnt
,
154 const struct rpc_message
*msg
, int flags
);
155 struct rpc_task
*rpc_call_null(struct rpc_clnt
*clnt
, struct rpc_cred
*cred
,
157 int rpc_restart_call_prepare(struct rpc_task
*);
158 int rpc_restart_call(struct rpc_task
*);
159 void rpc_setbufsize(struct rpc_clnt
*, unsigned int, unsigned int);
160 int rpc_protocol(struct rpc_clnt
*);
161 struct net
* rpc_net_ns(struct rpc_clnt
*);
162 size_t rpc_max_payload(struct rpc_clnt
*);
163 void rpc_force_rebind(struct rpc_clnt
*);
164 size_t rpc_peeraddr(struct rpc_clnt
*, struct sockaddr
*, size_t);
165 const char *rpc_peeraddr2str(struct rpc_clnt
*, enum rpc_display_format_t
);
166 int rpc_localaddr(struct rpc_clnt
*, struct sockaddr
*, size_t);
168 #endif /* __KERNEL__ */
169 #endif /* _LINUX_SUNRPC_CLNT_H */