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/sunrpc/msg_prot.h>
13 #include <linux/sunrpc/sched.h>
14 #include <linux/sunrpc/xprt.h>
15 #include <linux/sunrpc/auth.h>
16 #include <linux/sunrpc/stats.h>
17 #include <linux/sunrpc/xdr.h>
18 #include <linux/sunrpc/timer.h>
19 #include <asm/signal.h>
22 * This defines an RPC port mapping
29 unsigned char pm_binding : 1; /* doing a getport() */
30 struct rpc_wait_queue pm_bindwait; /* waiting on getport() */
36 * The high-level client handle
39 atomic_t cl_count; /* Number of clones */
40 atomic_t cl_users; /* number of references */
41 struct rpc_xprt * cl_xprt; /* transport */
42 struct rpc_procinfo * cl_procinfo; /* procedure info */
43 u32 cl_maxproc; /* max procedure number */
45 char * cl_server; /* server machine name */
46 char * cl_protname; /* protocol name */
47 struct rpc_auth * cl_auth; /* authenticator */
48 struct rpc_stat * cl_stats; /* statistics */
50 unsigned int cl_softrtry : 1,/* soft timeouts */
51 cl_intr : 1,/* interruptible */
52 cl_chatty : 1,/* be verbose */
53 cl_autobind : 1,/* use getport() */
54 cl_oneshot : 1,/* dispose after use */
55 cl_dead : 1;/* abandoned */
57 struct rpc_rtt * cl_rtt; /* RTO estimator data */
58 struct rpc_portmap * cl_pmap; /* port mapping */
60 int cl_nodelen; /* nodename length */
61 char cl_nodename[UNX_MAXNODENAME];
62 char cl_pathname[30];/* Path in rpc_pipe_fs */
63 struct dentry * cl_dentry; /* inode */
64 struct rpc_clnt * cl_parent; /* Points to parent of clones */
65 struct rpc_rtt cl_rtt_default;
66 struct rpc_portmap cl_pmap_default;
67 char cl_inline_name[32];
69 #define cl_timeout cl_xprt->timeout
70 #define cl_prog cl_pmap->pm_prog
71 #define cl_vers cl_pmap->pm_vers
72 #define cl_port cl_pmap->pm_port
73 #define cl_prot cl_pmap->pm_prot
76 * General RPC program info
78 #define RPC_MAXVERSION 4
80 char * name; /* protocol name */
81 u32 number; /* program number */
82 unsigned int nrvers; /* number of versions */
83 struct rpc_version ** version; /* version array */
84 struct rpc_stat * stats; /* statistics */
85 char * pipe_dir_name; /* path to rpc_pipefs dir */
89 u32 number; /* version number */
90 unsigned int nrprocs; /* number of procs */
91 struct rpc_procinfo * procs; /* procedure array */
95 * Procedure information
98 u32 p_proc; /* RPC procedure number */
99 kxdrproc_t p_encode; /* XDR encode function */
100 kxdrproc_t p_decode; /* XDR decode function */
101 unsigned int p_bufsiz; /* req. buffer size */
102 unsigned int p_count; /* call count */
103 unsigned int p_timer; /* Which RTT timer to use */
106 #define RPC_CONGESTED(clnt) (RPCXPRT_CONGESTED((clnt)->cl_xprt))
107 #define RPC_PEERADDR(clnt) (&(clnt)->cl_xprt->addr)
111 struct rpc_clnt *rpc_create_client(struct rpc_xprt *xprt, char *servname,
112 struct rpc_program *info,
113 u32 version, rpc_authflavor_t authflavor);
114 struct rpc_clnt *rpc_new_client(struct rpc_xprt *xprt, char *servname,
115 struct rpc_program *info,
116 u32 version, rpc_authflavor_t authflavor);
117 struct rpc_clnt *rpc_bind_new_program(struct rpc_clnt *,
118 struct rpc_program *, int);
119 struct rpc_clnt *rpc_clone_client(struct rpc_clnt *);
120 int rpc_shutdown_client(struct rpc_clnt *);
121 int rpc_destroy_client(struct rpc_clnt *);
122 void rpc_release_client(struct rpc_clnt *);
123 void rpc_getport(struct rpc_task *, struct rpc_clnt *);
124 int rpc_register(u32, u32, int, unsigned short, int *);
126 void rpc_call_setup(struct rpc_task *, struct rpc_message *, int);
128 int rpc_call_async(struct rpc_clnt *clnt, struct rpc_message *msg,
129 int flags, rpc_action callback, void *clntdata);
130 int rpc_call_sync(struct rpc_clnt *clnt, struct rpc_message *msg,
132 void rpc_restart_call(struct rpc_task *);
133 void rpc_clnt_sigmask(struct rpc_clnt *clnt, sigset_t *oldset);
134 void rpc_clnt_sigunmask(struct rpc_clnt *clnt, sigset_t *oldset);
135 void rpc_setbufsize(struct rpc_clnt *, unsigned int, unsigned int);
136 size_t rpc_max_payload(struct rpc_clnt *);
137 int rpc_ping(struct rpc_clnt *clnt, int flags);
140 int rpc_call(struct rpc_clnt *clnt, u32 proc, void *argp, void *resp, int flags)
142 struct rpc_message msg = {
143 .rpc_proc = &clnt->cl_procinfo[proc],
148 return rpc_call_sync(clnt, &msg, flags);
151 extern void rpciod_wake_up(void);
154 * Helper function for NFSroot support
156 int rpc_getport_external(struct sockaddr_in *, __u32, __u32, int);
158 #endif /* __KERNEL__ */
159 #endif /* _LINUX_SUNRPC_CLNT_H */