154 lines
4.5 KiB
C
154 lines
4.5 KiB
C
/*
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* linux/include/linux/sunrpc/clnt.h
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*
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* Declarations for the high-level RPC client interface
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*
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* Copyright (C) 1995, 1996, Olaf Kirch <okir@monad.swb.de>
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*/
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#ifndef _LINUX_SUNRPC_CLNT_H
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#define _LINUX_SUNRPC_CLNT_H
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#include <linux/sunrpc/msg_prot.h>
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#include <linux/sunrpc/sched.h>
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#include <linux/sunrpc/xprt.h>
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#include <linux/sunrpc/auth.h>
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#include <linux/sunrpc/stats.h>
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#include <linux/sunrpc/xdr.h>
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#include <linux/sunrpc/timer.h>
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#include <asm/signal.h>
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/*
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* This defines an RPC port mapping
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*/
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struct rpc_portmap {
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__u32 pm_prog;
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__u32 pm_vers;
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__u32 pm_prot;
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__u16 pm_port;
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unsigned char pm_binding : 1; /* doing a getport() */
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struct rpc_wait_queue pm_bindwait; /* waiting on getport() */
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};
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struct rpc_inode;
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/*
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* The high-level client handle
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*/
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struct rpc_clnt {
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atomic_t cl_count; /* Number of clones */
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atomic_t cl_users; /* number of references */
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struct rpc_xprt * cl_xprt; /* transport */
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struct rpc_procinfo * cl_procinfo; /* procedure info */
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u32 cl_maxproc; /* max procedure number */
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char * cl_server; /* server machine name */
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char * cl_protname; /* protocol name */
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struct rpc_auth * cl_auth; /* authenticator */
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struct rpc_stat * cl_stats; /* statistics */
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unsigned int cl_softrtry : 1,/* soft timeouts */
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cl_intr : 1,/* interruptible */
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cl_chatty : 1,/* be verbose */
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cl_autobind : 1,/* use getport() */
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cl_oneshot : 1,/* dispose after use */
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cl_dead : 1;/* abandoned */
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struct rpc_rtt * cl_rtt; /* RTO estimator data */
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struct rpc_portmap * cl_pmap; /* port mapping */
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int cl_nodelen; /* nodename length */
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char cl_nodename[UNX_MAXNODENAME];
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char cl_pathname[30];/* Path in rpc_pipe_fs */
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struct dentry * cl_dentry; /* inode */
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struct rpc_clnt * cl_parent; /* Points to parent of clones */
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struct rpc_rtt cl_rtt_default;
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struct rpc_portmap cl_pmap_default;
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char cl_inline_name[32];
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};
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#define cl_timeout cl_xprt->timeout
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#define cl_prog cl_pmap->pm_prog
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#define cl_vers cl_pmap->pm_vers
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#define cl_port cl_pmap->pm_port
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#define cl_prot cl_pmap->pm_prot
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/*
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* General RPC program info
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*/
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#define RPC_MAXVERSION 4
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struct rpc_program {
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char * name; /* protocol name */
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u32 number; /* program number */
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unsigned int nrvers; /* number of versions */
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struct rpc_version ** version; /* version array */
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struct rpc_stat * stats; /* statistics */
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char * pipe_dir_name; /* path to rpc_pipefs dir */
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};
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struct rpc_version {
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u32 number; /* version number */
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unsigned int nrprocs; /* number of procs */
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struct rpc_procinfo * procs; /* procedure array */
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};
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/*
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* Procedure information
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*/
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struct rpc_procinfo {
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u32 p_proc; /* RPC procedure number */
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kxdrproc_t p_encode; /* XDR encode function */
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kxdrproc_t p_decode; /* XDR decode function */
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unsigned int p_bufsiz; /* req. buffer size */
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unsigned int p_count; /* call count */
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unsigned int p_timer; /* Which RTT timer to use */
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};
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#define RPC_CONGESTED(clnt) (RPCXPRT_CONGESTED((clnt)->cl_xprt))
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#define RPC_PEERADDR(clnt) (&(clnt)->cl_xprt->addr)
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#ifdef __KERNEL__
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struct rpc_clnt *rpc_create_client(struct rpc_xprt *xprt, char *servname,
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struct rpc_program *info,
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u32 version, rpc_authflavor_t authflavor);
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struct rpc_clnt *rpc_clone_client(struct rpc_clnt *);
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int rpc_shutdown_client(struct rpc_clnt *);
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int rpc_destroy_client(struct rpc_clnt *);
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void rpc_release_client(struct rpc_clnt *);
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void rpc_getport(struct rpc_task *, struct rpc_clnt *);
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int rpc_register(u32, u32, int, unsigned short, int *);
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void rpc_call_setup(struct rpc_task *, struct rpc_message *, int);
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int rpc_call_async(struct rpc_clnt *clnt, struct rpc_message *msg,
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int flags, rpc_action callback, void *clntdata);
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int rpc_call_sync(struct rpc_clnt *clnt, struct rpc_message *msg,
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int flags);
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void rpc_restart_call(struct rpc_task *);
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void rpc_clnt_sigmask(struct rpc_clnt *clnt, sigset_t *oldset);
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void rpc_clnt_sigunmask(struct rpc_clnt *clnt, sigset_t *oldset);
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void rpc_setbufsize(struct rpc_clnt *, unsigned int, unsigned int);
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size_t rpc_max_payload(struct rpc_clnt *);
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static __inline__
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int rpc_call(struct rpc_clnt *clnt, u32 proc, void *argp, void *resp, int flags)
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{
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struct rpc_message msg = {
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.rpc_proc = &clnt->cl_procinfo[proc],
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.rpc_argp = argp,
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.rpc_resp = resp,
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.rpc_cred = NULL
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};
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return rpc_call_sync(clnt, &msg, flags);
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}
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extern void rpciod_wake_up(void);
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/*
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* Helper function for NFSroot support
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*/
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int rpc_getport_external(struct sockaddr_in *, __u32, __u32, int);
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#endif /* __KERNEL__ */
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#endif /* _LINUX_SUNRPC_CLNT_H */
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