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 <linux/sunrpc/rpc_pipe_fs.h>
25 #include <asm/signal.h>
26 #include <linux/path.h>
32 * The high-level client handle
35 atomic_t cl_count
; /* Number of references */
36 unsigned int cl_clid
; /* client id */
37 struct list_head cl_clients
; /* Global list of clients */
38 struct list_head cl_tasks
; /* List of tasks */
39 spinlock_t cl_lock
; /* spinlock */
40 struct rpc_xprt __rcu
* cl_xprt
; /* transport */
41 struct rpc_procinfo
* cl_procinfo
; /* procedure info */
42 u32 cl_prog
, /* RPC program number */
43 cl_vers
, /* RPC version number */
44 cl_maxproc
; /* max procedure number */
46 struct rpc_auth
* cl_auth
; /* authenticator */
47 struct rpc_stat
* cl_stats
; /* per-program statistics */
48 struct rpc_iostats
* cl_metrics
; /* per-client statistics */
50 unsigned int cl_softrtry
: 1,/* soft timeouts */
51 cl_discrtry
: 1,/* disconnect before retry */
52 cl_noretranstimeo
: 1,/* No retransmit timeouts */
53 cl_autobind
: 1,/* use getport() */
54 cl_chatty
: 1;/* be verbose */
56 struct rpc_rtt
* cl_rtt
; /* RTO estimator data */
57 const struct rpc_timeout
*cl_timeout
; /* Timeout strategy */
59 int cl_nodelen
; /* nodename length */
60 char cl_nodename
[UNX_MAXNODENAME
];
61 struct rpc_pipe_dir_head cl_pipedir_objects
;
62 struct rpc_clnt
* cl_parent
; /* Points to parent of clones */
63 struct rpc_rtt cl_rtt_default
;
64 struct rpc_timeout cl_timeout_default
;
65 const struct rpc_program
*cl_program
;
66 #if IS_ENABLED(CONFIG_SUNRPC_DEBUG)
67 struct dentry
*cl_debugfs
; /* debugfs directory */
72 * General RPC program info
74 #define RPC_MAXVERSION 4
76 const char * name
; /* protocol name */
77 u32 number
; /* program number */
78 unsigned int nrvers
; /* number of versions */
79 const struct rpc_version
** version
; /* version array */
80 struct rpc_stat
* stats
; /* statistics */
81 const char * pipe_dir_name
; /* path to rpc_pipefs dir */
85 u32 number
; /* version number */
86 unsigned int nrprocs
; /* number of procs */
87 struct rpc_procinfo
* procs
; /* procedure array */
91 * Procedure information
94 u32 p_proc
; /* RPC procedure number */
95 kxdreproc_t p_encode
; /* XDR encode function */
96 kxdrdproc_t p_decode
; /* XDR decode function */
97 unsigned int p_arglen
; /* argument hdr length (u32) */
98 unsigned int p_replen
; /* reply hdr length (u32) */
99 unsigned int p_count
; /* call count */
100 unsigned int p_timer
; /* Which RTT timer to use */
101 u32 p_statidx
; /* Which procedure to account */
102 const char * p_name
; /* name of procedure */
107 struct rpc_create_args
{
110 struct sockaddr
*address
;
112 struct sockaddr
*saddress
;
113 const struct rpc_timeout
*timeout
;
114 const char *servername
;
115 const struct rpc_program
*program
;
116 u32 prognumber
; /* overrides program->number */
118 rpc_authflavor_t authflavor
;
121 struct svc_xprt
*bc_xprt
; /* NFSv4.1 backchannel */
124 /* Values for "flags" field */
125 #define RPC_CLNT_CREATE_HARDRTRY (1UL << 0)
126 #define RPC_CLNT_CREATE_AUTOBIND (1UL << 2)
127 #define RPC_CLNT_CREATE_NONPRIVPORT (1UL << 3)
128 #define RPC_CLNT_CREATE_NOPING (1UL << 4)
129 #define RPC_CLNT_CREATE_DISCRTRY (1UL << 5)
130 #define RPC_CLNT_CREATE_QUIET (1UL << 6)
131 #define RPC_CLNT_CREATE_INFINITE_SLOTS (1UL << 7)
132 #define RPC_CLNT_CREATE_NO_IDLE_TIMEOUT (1UL << 8)
133 #define RPC_CLNT_CREATE_NO_RETRANS_TIMEOUT (1UL << 9)
135 struct rpc_clnt
*rpc_create(struct rpc_create_args
*args
);
136 struct rpc_clnt
*rpc_create_xprt(struct rpc_create_args
*args
,
137 struct rpc_xprt
*xprt
);
138 struct rpc_clnt
*rpc_bind_new_program(struct rpc_clnt
*,
139 const struct rpc_program
*, u32
);
140 void rpc_task_reset_client(struct rpc_task
*task
, struct rpc_clnt
*clnt
);
141 struct rpc_clnt
*rpc_clone_client(struct rpc_clnt
*);
142 struct rpc_clnt
*rpc_clone_client_set_auth(struct rpc_clnt
*,
144 int rpc_switch_client_transport(struct rpc_clnt
*,
145 struct xprt_create
*,
146 const struct rpc_timeout
*);
148 void rpc_shutdown_client(struct rpc_clnt
*);
149 void rpc_release_client(struct rpc_clnt
*);
150 void rpc_task_release_client(struct rpc_task
*);
152 int rpcb_create_local(struct net
*);
153 void rpcb_put_local(struct net
*);
154 int rpcb_register(struct net
*, u32
, u32
, int, unsigned short);
155 int rpcb_v4_register(struct net
*net
, const u32 program
,
157 const struct sockaddr
*address
,
159 void rpcb_getport_async(struct rpc_task
*);
161 void rpc_call_start(struct rpc_task
*);
162 int rpc_call_async(struct rpc_clnt
*clnt
,
163 const struct rpc_message
*msg
, int flags
,
164 const struct rpc_call_ops
*tk_ops
,
166 int rpc_call_sync(struct rpc_clnt
*clnt
,
167 const struct rpc_message
*msg
, int flags
);
168 struct rpc_task
*rpc_call_null(struct rpc_clnt
*clnt
, struct rpc_cred
*cred
,
170 int rpc_restart_call_prepare(struct rpc_task
*);
171 int rpc_restart_call(struct rpc_task
*);
172 void rpc_setbufsize(struct rpc_clnt
*, unsigned int, unsigned int);
173 int rpc_protocol(struct rpc_clnt
*);
174 struct net
* rpc_net_ns(struct rpc_clnt
*);
175 size_t rpc_max_payload(struct rpc_clnt
*);
176 unsigned long rpc_get_timeout(struct rpc_clnt
*clnt
);
177 void rpc_force_rebind(struct rpc_clnt
*);
178 size_t rpc_peeraddr(struct rpc_clnt
*, struct sockaddr
*, size_t);
179 const char *rpc_peeraddr2str(struct rpc_clnt
*, enum rpc_display_format_t
);
180 int rpc_localaddr(struct rpc_clnt
*, struct sockaddr
*, size_t);
182 const char *rpc_proc_name(const struct rpc_task
*task
);
183 #endif /* __KERNEL__ */
184 #endif /* _LINUX_SUNRPC_CLNT_H */