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;
69 * General RPC program info
71 #define RPC_MAXVERSION 4
73 const char * name; /* protocol name */
74 u32 number; /* program number */
75 unsigned int nrvers; /* number of versions */
76 const struct rpc_version ** version; /* version array */
77 struct rpc_stat * stats; /* statistics */
78 const char * pipe_dir_name; /* path to rpc_pipefs dir */
82 u32 number; /* version number */
83 unsigned int nrprocs; /* number of procs */
84 struct rpc_procinfo * procs; /* procedure array */
88 * Procedure information
91 u32 p_proc; /* RPC procedure number */
92 kxdreproc_t p_encode; /* XDR encode function */
93 kxdrdproc_t p_decode; /* XDR decode function */
94 unsigned int p_arglen; /* argument hdr length (u32) */
95 unsigned int p_replen; /* reply hdr length (u32) */
96 unsigned int p_count; /* call count */
97 unsigned int p_timer; /* Which RTT timer to use */
98 u32 p_statidx; /* Which procedure to account */
99 const char * p_name; /* name of procedure */
104 struct rpc_create_args {
107 struct sockaddr *address;
109 struct sockaddr *saddress;
110 const struct rpc_timeout *timeout;
111 const char *servername;
112 const struct rpc_program *program;
113 u32 prognumber; /* overrides program->number */
115 rpc_authflavor_t authflavor;
118 struct svc_xprt *bc_xprt; /* NFSv4.1 backchannel */
121 /* Values for "flags" field */
122 #define RPC_CLNT_CREATE_HARDRTRY (1UL << 0)
123 #define RPC_CLNT_CREATE_AUTOBIND (1UL << 2)
124 #define RPC_CLNT_CREATE_NONPRIVPORT (1UL << 3)
125 #define RPC_CLNT_CREATE_NOPING (1UL << 4)
126 #define RPC_CLNT_CREATE_DISCRTRY (1UL << 5)
127 #define RPC_CLNT_CREATE_QUIET (1UL << 6)
128 #define RPC_CLNT_CREATE_INFINITE_SLOTS (1UL << 7)
129 #define RPC_CLNT_CREATE_NO_IDLE_TIMEOUT (1UL << 8)
130 #define RPC_CLNT_CREATE_NO_RETRANS_TIMEOUT (1UL << 9)
132 struct rpc_clnt *rpc_create(struct rpc_create_args *args);
133 struct rpc_clnt *rpc_bind_new_program(struct rpc_clnt *,
134 const struct rpc_program *, u32);
135 void rpc_task_reset_client(struct rpc_task *task, struct rpc_clnt *clnt);
136 struct rpc_clnt *rpc_clone_client(struct rpc_clnt *);
137 struct rpc_clnt *rpc_clone_client_set_auth(struct rpc_clnt *,
139 int rpc_switch_client_transport(struct rpc_clnt *,
140 struct xprt_create *,
141 const struct rpc_timeout *);
143 void rpc_shutdown_client(struct rpc_clnt *);
144 void rpc_release_client(struct rpc_clnt *);
145 void rpc_task_release_client(struct rpc_task *);
147 int rpcb_create_local(struct net *);
148 void rpcb_put_local(struct net *);
149 int rpcb_register(struct net *, u32, u32, int, unsigned short);
150 int rpcb_v4_register(struct net *net, const u32 program,
152 const struct sockaddr *address,
154 void rpcb_getport_async(struct rpc_task *);
156 void rpc_call_start(struct rpc_task *);
157 int rpc_call_async(struct rpc_clnt *clnt,
158 const struct rpc_message *msg, int flags,
159 const struct rpc_call_ops *tk_ops,
161 int rpc_call_sync(struct rpc_clnt *clnt,
162 const struct rpc_message *msg, int flags);
163 struct rpc_task *rpc_call_null(struct rpc_clnt *clnt, struct rpc_cred *cred,
165 int rpc_restart_call_prepare(struct rpc_task *);
166 int rpc_restart_call(struct rpc_task *);
167 void rpc_setbufsize(struct rpc_clnt *, unsigned int, unsigned int);
168 int rpc_protocol(struct rpc_clnt *);
169 struct net * rpc_net_ns(struct rpc_clnt *);
170 size_t rpc_max_payload(struct rpc_clnt *);
171 unsigned long rpc_get_timeout(struct rpc_clnt *clnt);
172 void rpc_force_rebind(struct rpc_clnt *);
173 size_t rpc_peeraddr(struct rpc_clnt *, struct sockaddr *, size_t);
174 const char *rpc_peeraddr2str(struct rpc_clnt *, enum rpc_display_format_t);
175 int rpc_localaddr(struct rpc_clnt *, struct sockaddr *, size_t);
177 #endif /* __KERNEL__ */
178 #endif /* _LINUX_SUNRPC_CLNT_H */