diff options
Diffstat (limited to 'include/linux/sunrpc/clnt.h')
| -rw-r--r-- | include/linux/sunrpc/clnt.h | 153 |
1 files changed, 153 insertions, 0 deletions
diff --git a/include/linux/sunrpc/clnt.h b/include/linux/sunrpc/clnt.h new file mode 100644 index 000000000000..2709caf4d128 --- /dev/null +++ b/include/linux/sunrpc/clnt.h @@ -0,0 +1,153 @@ +/* + * linux/include/linux/sunrpc/clnt.h + * + * Declarations for the high-level RPC client interface + * + * Copyright (C) 1995, 1996, Olaf Kirch <okir@monad.swb.de> + */ + +#ifndef _LINUX_SUNRPC_CLNT_H +#define _LINUX_SUNRPC_CLNT_H + +#include <linux/sunrpc/msg_prot.h> +#include <linux/sunrpc/sched.h> +#include <linux/sunrpc/xprt.h> +#include <linux/sunrpc/auth.h> +#include <linux/sunrpc/stats.h> +#include <linux/sunrpc/xdr.h> +#include <linux/sunrpc/timer.h> +#include <asm/signal.h> + +/* + * This defines an RPC port mapping + */ +struct rpc_portmap { + __u32 pm_prog; + __u32 pm_vers; + __u32 pm_prot; + __u16 pm_port; + unsigned char pm_binding : 1; /* doing a getport() */ + struct rpc_wait_queue pm_bindwait; /* waiting on getport() */ +}; + +struct rpc_inode; + +/* + * The high-level client handle + */ +struct rpc_clnt { + atomic_t cl_count; /* Number of clones */ + atomic_t cl_users; /* number of references */ + struct rpc_xprt * cl_xprt; /* transport */ + struct rpc_procinfo * cl_procinfo; /* procedure info */ + u32 cl_maxproc; /* max procedure number */ + + char * cl_server; /* server machine name */ + char * cl_protname; /* protocol name */ + struct rpc_auth * cl_auth; /* authenticator */ + struct rpc_stat * cl_stats; /* statistics */ + + unsigned int cl_softrtry : 1,/* soft timeouts */ + cl_intr : 1,/* interruptible */ + cl_chatty : 1,/* be verbose */ + cl_autobind : 1,/* use getport() */ + cl_oneshot : 1,/* dispose after use */ + cl_dead : 1;/* abandoned */ + + struct rpc_rtt * cl_rtt; /* RTO estimator data */ + struct rpc_portmap * cl_pmap; /* port mapping */ + + int cl_nodelen; /* nodename length */ + char cl_nodename[UNX_MAXNODENAME]; + char cl_pathname[30];/* Path in rpc_pipe_fs */ + struct dentry * cl_dentry; /* inode */ + struct rpc_clnt * cl_parent; /* Points to parent of clones */ + struct rpc_rtt cl_rtt_default; + struct rpc_portmap cl_pmap_default; + char cl_inline_name[32]; +}; +#define cl_timeout cl_xprt->timeout +#define cl_prog cl_pmap->pm_prog +#define cl_vers cl_pmap->pm_vers +#define cl_port cl_pmap->pm_port +#define cl_prot cl_pmap->pm_prot + +/* + * General RPC program info + */ +#define RPC_MAXVERSION 4 +struct rpc_program { + char * name; /* protocol name */ + u32 number; /* program number */ + unsigned int nrvers; /* number of versions */ + struct rpc_version ** version; /* version array */ + struct rpc_stat * stats; /* statistics */ + char * pipe_dir_name; /* path to rpc_pipefs dir */ +}; + +struct rpc_version { + u32 number; /* version number */ + unsigned int nrprocs; /* number of procs */ + struct rpc_procinfo * procs; /* procedure array */ +}; + +/* + * Procedure information + */ +struct rpc_procinfo { + u32 p_proc; /* RPC procedure number */ + kxdrproc_t p_encode; /* XDR encode function */ + kxdrproc_t p_decode; /* XDR decode function */ + unsigned int p_bufsiz; /* req. buffer size */ + unsigned int p_count; /* call count */ + unsigned int p_timer; /* Which RTT timer to use */ +}; + +#define RPC_CONGESTED(clnt) (RPCXPRT_CONGESTED((clnt)->cl_xprt)) +#define RPC_PEERADDR(clnt) (&(clnt)->cl_xprt->addr) + +#ifdef __KERNEL__ + +struct rpc_clnt *rpc_create_client(struct rpc_xprt *xprt, char *servname, + struct rpc_program *info, + u32 version, rpc_authflavor_t authflavor); +struct rpc_clnt *rpc_clone_client(struct rpc_clnt *); +int rpc_shutdown_client(struct rpc_clnt *); +int rpc_destroy_client(struct rpc_clnt *); +void rpc_release_client(struct rpc_clnt *); +void rpc_getport(struct rpc_task *, struct rpc_clnt *); +int rpc_register(u32, u32, int, unsigned short, int *); + +void rpc_call_setup(struct rpc_task *, struct rpc_message *, int); + +int rpc_call_async(struct rpc_clnt *clnt, struct rpc_message *msg, + int flags, rpc_action callback, void *clntdata); +int rpc_call_sync(struct rpc_clnt *clnt, struct rpc_message *msg, + int flags); +void rpc_restart_call(struct rpc_task *); +void rpc_clnt_sigmask(struct rpc_clnt *clnt, sigset_t *oldset); +void rpc_clnt_sigunmask(struct rpc_clnt *clnt, sigset_t *oldset); +void rpc_setbufsize(struct rpc_clnt *, unsigned int, unsigned int); +size_t rpc_max_payload(struct rpc_clnt *); + +static __inline__ +int rpc_call(struct rpc_clnt *clnt, u32 proc, void *argp, void *resp, int flags) +{ + struct rpc_message msg = { + .rpc_proc = &clnt->cl_procinfo[proc], + .rpc_argp = argp, + .rpc_resp = resp, + .rpc_cred = NULL + }; + return rpc_call_sync(clnt, &msg, flags); +} + +extern void rpciod_wake_up(void); + +/* + * Helper function for NFSroot support + */ +int rpc_getport_external(struct sockaddr_in *, __u32, __u32, int); + +#endif /* __KERNEL__ */ +#endif /* _LINUX_SUNRPC_CLNT_H */ |