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Creation of Cybook 2416 (actually Gen4) repository

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mlt
2009-12-18 17:10:00 +00:00
committed by godzil
commit 76f20f4d40
13791 changed files with 6812321 additions and 0 deletions
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1
include/linux/sunrpc/Kbuild Normal file
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unifdef-y += debug.h

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include/linux/sunrpc/auth.h Normal file
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/*
* linux/include/linux/sunrpc/auth.h
*
* Declarations for the RPC client authentication machinery.
*
* Copyright (C) 1996, Olaf Kirch <okir@monad.swb.de>
*/
#ifndef _LINUX_SUNRPC_AUTH_H
#define _LINUX_SUNRPC_AUTH_H
#ifdef __KERNEL__
#include <linux/sunrpc/sched.h>
#include <linux/sunrpc/msg_prot.h>
#include <linux/sunrpc/xdr.h>
#include <asm/atomic.h>
/* size of the nodename buffer */
#define UNX_MAXNODENAME 32
/* Work around the lack of a VFS credential */
struct auth_cred {
uid_t uid;
gid_t gid;
struct group_info *group_info;
};
/*
* Client user credentials
*/
struct rpc_cred {
struct hlist_node cr_hash; /* hash chain */
struct rpc_credops * cr_ops;
unsigned long cr_expire; /* when to gc */
atomic_t cr_count; /* ref count */
unsigned short cr_flags; /* various flags */
#ifdef RPC_DEBUG
unsigned long cr_magic; /* 0x0f4aa4f0 */
#endif
uid_t cr_uid;
/* per-flavor data */
};
#define RPCAUTH_CRED_NEW 0x0001
#define RPCAUTH_CRED_UPTODATE 0x0002
#define RPCAUTH_CRED_MAGIC 0x0f4aa4f0
/*
* Client authentication handle
*/
#define RPC_CREDCACHE_NR 8
#define RPC_CREDCACHE_MASK (RPC_CREDCACHE_NR - 1)
struct rpc_cred_cache {
struct hlist_head hashtable[RPC_CREDCACHE_NR];
unsigned long nextgc; /* next garbage collection */
unsigned long expire; /* cache expiry interval */
};
struct rpc_auth {
unsigned int au_cslack; /* call cred size estimate */
/* guess at number of u32's auth adds before
* reply data; normally the verifier size: */
unsigned int au_rslack;
/* for gss, used to calculate au_rslack: */
unsigned int au_verfsize;
unsigned int au_flags; /* various flags */
struct rpc_authops * au_ops; /* operations */
rpc_authflavor_t au_flavor; /* pseudoflavor (note may
* differ from the flavor in
* au_ops->au_flavor in gss
* case) */
atomic_t au_count; /* Reference counter */
struct rpc_cred_cache * au_credcache;
/* per-flavor data */
};
/* Flags for rpcauth_lookupcred() */
#define RPCAUTH_LOOKUP_NEW 0x01 /* Accept an uninitialised cred */
#define RPCAUTH_LOOKUP_ROOTCREDS 0x02 /* This really ought to go! */
/*
* Client authentication ops
*/
struct rpc_authops {
struct module *owner;
rpc_authflavor_t au_flavor; /* flavor (RPC_AUTH_*) */
#ifdef RPC_DEBUG
char * au_name;
#endif
struct rpc_auth * (*create)(struct rpc_clnt *, rpc_authflavor_t);
void (*destroy)(struct rpc_auth *);
struct rpc_cred * (*lookup_cred)(struct rpc_auth *, struct auth_cred *, int);
struct rpc_cred * (*crcreate)(struct rpc_auth*, struct auth_cred *, int);
};
struct rpc_credops {
const char * cr_name; /* Name of the auth flavour */
int (*cr_init)(struct rpc_auth *, struct rpc_cred *);
void (*crdestroy)(struct rpc_cred *);
int (*crmatch)(struct auth_cred *, struct rpc_cred *, int);
__be32 * (*crmarshal)(struct rpc_task *, __be32 *);
int (*crrefresh)(struct rpc_task *);
__be32 * (*crvalidate)(struct rpc_task *, __be32 *);
int (*crwrap_req)(struct rpc_task *, kxdrproc_t,
void *, __be32 *, void *);
int (*crunwrap_resp)(struct rpc_task *, kxdrproc_t,
void *, __be32 *, void *);
};
extern struct rpc_authops authunix_ops;
extern struct rpc_authops authnull_ops;
#ifdef CONFIG_SUNRPC_SECURE
extern struct rpc_authops authdes_ops;
#endif
int rpcauth_register(struct rpc_authops *);
int rpcauth_unregister(struct rpc_authops *);
struct rpc_auth * rpcauth_create(rpc_authflavor_t, struct rpc_clnt *);
void rpcauth_destroy(struct rpc_auth *);
struct rpc_cred * rpcauth_lookup_credcache(struct rpc_auth *, struct auth_cred *, int);
struct rpc_cred * rpcauth_lookupcred(struct rpc_auth *, int);
struct rpc_cred * rpcauth_bindcred(struct rpc_task *);
void rpcauth_holdcred(struct rpc_task *);
void put_rpccred(struct rpc_cred *);
void rpcauth_unbindcred(struct rpc_task *);
__be32 * rpcauth_marshcred(struct rpc_task *, __be32 *);
__be32 * rpcauth_checkverf(struct rpc_task *, __be32 *);
int rpcauth_wrap_req(struct rpc_task *task, kxdrproc_t encode, void *rqstp, __be32 *data, void *obj);
int rpcauth_unwrap_resp(struct rpc_task *task, kxdrproc_t decode, void *rqstp, __be32 *data, void *obj);
int rpcauth_refreshcred(struct rpc_task *);
void rpcauth_invalcred(struct rpc_task *);
int rpcauth_uptodatecred(struct rpc_task *);
int rpcauth_init_credcache(struct rpc_auth *, unsigned long);
void rpcauth_free_credcache(struct rpc_auth *);
static inline
struct rpc_cred * get_rpccred(struct rpc_cred *cred)
{
atomic_inc(&cred->cr_count);
return cred;
}
#endif /* __KERNEL__ */
#endif /* _LINUX_SUNRPC_AUTH_H */

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include/linux/sunrpc/auth_gss.h Normal file
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/*
* linux/include/linux/sunrpc/auth_gss.h
*
* Declarations for RPCSEC_GSS
*
* Dug Song <dugsong@monkey.org>
* Andy Adamson <andros@umich.edu>
* Bruce Fields <bfields@umich.edu>
* Copyright (c) 2000 The Regents of the University of Michigan
*
* $Id: auth_gss.h,v 1.1.1.1 2007/06/12 07:27:16 eyryu Exp $
*/
#ifndef _LINUX_SUNRPC_AUTH_GSS_H
#define _LINUX_SUNRPC_AUTH_GSS_H
#ifdef __KERNEL__
#include <linux/sunrpc/auth.h>
#include <linux/sunrpc/svc.h>
#include <linux/sunrpc/gss_api.h>
#define RPC_GSS_VERSION 1
#define MAXSEQ 0x80000000 /* maximum legal sequence number, from rfc 2203 */
enum rpc_gss_proc {
RPC_GSS_PROC_DATA = 0,
RPC_GSS_PROC_INIT = 1,
RPC_GSS_PROC_CONTINUE_INIT = 2,
RPC_GSS_PROC_DESTROY = 3
};
enum rpc_gss_svc {
RPC_GSS_SVC_NONE = 1,
RPC_GSS_SVC_INTEGRITY = 2,
RPC_GSS_SVC_PRIVACY = 3
};
/* on-the-wire gss cred: */
struct rpc_gss_wire_cred {
u32 gc_v; /* version */
u32 gc_proc; /* control procedure */
u32 gc_seq; /* sequence number */
u32 gc_svc; /* service */
struct xdr_netobj gc_ctx; /* context handle */
};
/* on-the-wire gss verifier: */
struct rpc_gss_wire_verf {
u32 gv_flavor;
struct xdr_netobj gv_verf;
};
/* return from gss NULL PROC init sec context */
struct rpc_gss_init_res {
struct xdr_netobj gr_ctx; /* context handle */
u32 gr_major; /* major status */
u32 gr_minor; /* minor status */
u32 gr_win; /* sequence window */
struct xdr_netobj gr_token; /* token */
};
/* The gss_cl_ctx struct holds all the information the rpcsec_gss client
* code needs to know about a single security context. In particular,
* gc_gss_ctx is the context handle that is used to do gss-api calls, while
* gc_wire_ctx is the context handle that is used to identify the context on
* the wire when communicating with a server. */
struct gss_cl_ctx {
atomic_t count;
enum rpc_gss_proc gc_proc;
u32 gc_seq;
spinlock_t gc_seq_lock;
struct gss_ctx *gc_gss_ctx;
struct xdr_netobj gc_wire_ctx;
u32 gc_win;
unsigned long gc_expiry;
};
struct gss_upcall_msg;
struct gss_cred {
struct rpc_cred gc_base;
enum rpc_gss_svc gc_service;
struct gss_cl_ctx *gc_ctx;
struct gss_upcall_msg *gc_upcall;
};
#define gc_uid gc_base.cr_uid
#define gc_count gc_base.cr_count
#define gc_flags gc_base.cr_flags
#define gc_expire gc_base.cr_expire
#endif /* __KERNEL__ */
#endif /* _LINUX_SUNRPC_AUTH_GSS_H */

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include/linux/sunrpc/cache.h Normal file
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/*
* include/linux/sunrpc/cache.h
*
* Generic code for various authentication-related caches
* used by sunrpc clients and servers.
*
* Copyright (C) 2002 Neil Brown <neilb@cse.unsw.edu.au>
*
* Released under terms in GPL version 2. See COPYING.
*
*/
#ifndef _LINUX_SUNRPC_CACHE_H_
#define _LINUX_SUNRPC_CACHE_H_
#include <linux/slab.h>
#include <asm/atomic.h>
#include <linux/proc_fs.h>
/*
* Each cache requires:
* - A 'struct cache_detail' which contains information specific to the cache
* for common code to use.
* - An item structure that must contain a "struct cache_head"
* - A lookup function defined using DefineCacheLookup
* - A 'put' function that can release a cache item. It will only
* be called after cache_put has succeed, so there are guarantee
* to be no references.
* - A function to calculate a hash of an item's key.
*
* as well as assorted code fragments (e.g. compare keys) and numbers
* (e.g. hash size, goal_age, etc).
*
* Each cache must be registered so that it can be cleaned regularly.
* When the cache is unregistered, it is flushed completely.
*
* Entries have a ref count and a 'hashed' flag which counts the existance
* in the hash table.
* We only expire entries when refcount is zero.
* Existance in the cache is counted the refcount.
*/
/* Every cache item has a common header that is used
* for expiring and refreshing entries.
*
*/
struct cache_head {
struct cache_head * next;
time_t expiry_time; /* After time time, don't use the data */
time_t last_refresh; /* If CACHE_PENDING, this is when upcall
* was sent, else this is when update was received
*/
struct kref ref;
unsigned long flags;
};
#define CACHE_VALID 0 /* Entry contains valid data */
#define CACHE_NEGATIVE 1 /* Negative entry - there is no match for the key */
#define CACHE_PENDING 2 /* An upcall has been sent but no reply received yet*/
#define CACHE_NEW_EXPIRY 120 /* keep new things pending confirmation for 120 seconds */
struct cache_detail {
struct module * owner;
int hash_size;
struct cache_head ** hash_table;
rwlock_t hash_lock;
atomic_t inuse; /* active user-space update or lookup */
char *name;
void (*cache_put)(struct kref *);
void (*cache_request)(struct cache_detail *cd,
struct cache_head *h,
char **bpp, int *blen);
int (*cache_parse)(struct cache_detail *,
char *buf, int len);
int (*cache_show)(struct seq_file *m,
struct cache_detail *cd,
struct cache_head *h);
struct cache_head * (*alloc)(void);
int (*match)(struct cache_head *orig, struct cache_head *new);
void (*init)(struct cache_head *orig, struct cache_head *new);
void (*update)(struct cache_head *orig, struct cache_head *new);
/* fields below this comment are for internal use
* and should not be touched by cache owners
*/
time_t flush_time; /* flush all cache items with last_refresh
* earlier than this */
struct list_head others;
time_t nextcheck;
int entries;
/* fields for communication over channel */
struct list_head queue;
struct proc_dir_entry *proc_ent;
struct proc_dir_entry *flush_ent, *channel_ent, *content_ent;
atomic_t readers; /* how many time is /chennel open */
time_t last_close; /* if no readers, when did last close */
time_t last_warn; /* when we last warned about no readers */
void (*warn_no_listener)(struct cache_detail *cd);
};
/* this must be embedded in any request structure that
* identifies an object that will want a callback on
* a cache fill
*/
struct cache_req {
struct cache_deferred_req *(*defer)(struct cache_req *req);
};
/* this must be embedded in a deferred_request that is being
* delayed awaiting cache-fill
*/
struct cache_deferred_req {
struct list_head hash; /* on hash chain */
struct list_head recent; /* on fifo */
struct cache_head *item; /* cache item we wait on */
time_t recv_time;
void *owner; /* we might need to discard all defered requests
* owned by someone */
void (*revisit)(struct cache_deferred_req *req,
int too_many);
};
extern struct cache_head *
sunrpc_cache_lookup(struct cache_detail *detail,
struct cache_head *key, int hash);
extern struct cache_head *
sunrpc_cache_update(struct cache_detail *detail,
struct cache_head *new, struct cache_head *old, int hash);
#define cache_for_each(pos, detail, index, member) \
for (({read_lock(&(detail)->hash_lock); index = (detail)->hash_size;}) ; \
({if (index==0)read_unlock(&(detail)->hash_lock); index--;}); \
) \
for (pos = container_of((detail)->hash_table[index], typeof(*pos), member); \
&pos->member; \
pos = container_of(pos->member.next, typeof(*pos), member))
extern void cache_clean_deferred(void *owner);
static inline struct cache_head *cache_get(struct cache_head *h)
{
kref_get(&h->ref);
return h;
}
static inline void cache_put(struct cache_head *h, struct cache_detail *cd)
{
if (atomic_read(&h->ref.refcount) <= 2 &&
h->expiry_time < cd->nextcheck)
cd->nextcheck = h->expiry_time;
kref_put(&h->ref, cd->cache_put);
}
static inline int cache_valid(struct cache_head *h)
{
/* If an item has been unhashed pending removal when
* the refcount drops to 0, the expiry_time will be
* set to 0. We don't want to consider such items
* valid in this context even though CACHE_VALID is
* set.
*/
return (h->expiry_time != 0 && test_bit(CACHE_VALID, &h->flags));
}
extern int cache_check(struct cache_detail *detail,
struct cache_head *h, struct cache_req *rqstp);
extern void cache_flush(void);
extern void cache_purge(struct cache_detail *detail);
#define NEVER (0x7FFFFFFF)
extern void cache_register(struct cache_detail *cd);
extern int cache_unregister(struct cache_detail *cd);
extern void qword_add(char **bpp, int *lp, char *str);
extern void qword_addhex(char **bpp, int *lp, char *buf, int blen);
extern int qword_get(char **bpp, char *dest, int bufsize);
static inline int get_int(char **bpp, int *anint)
{
char buf[50];
char *ep;
int rv;
int len = qword_get(bpp, buf, 50);
if (len < 0) return -EINVAL;
if (len ==0) return -ENOENT;
rv = simple_strtol(buf, &ep, 0);
if (*ep) return -EINVAL;
*anint = rv;
return 0;
}
static inline time_t get_expiry(char **bpp)
{
int rv;
if (get_int(bpp, &rv))
return 0;
if (rv < 0)
return 0;
return rv;
}
#endif /* _LINUX_SUNRPC_CACHE_H_ */

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/*
* 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>
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_prog, /* RPC program number */
cl_vers, /* RPC version number */
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; /* per-program statistics */
struct rpc_iostats * cl_metrics; /* per-client statistics */
unsigned int cl_softrtry : 1,/* soft timeouts */
cl_intr : 1,/* interruptible */
cl_discrtry : 1,/* disconnect before retry */
cl_autobind : 1,/* use getport() */
cl_oneshot : 1,/* dispose after use */
cl_dead : 1;/* abandoned */
struct rpc_rtt * cl_rtt; /* RTO estimator data */
int cl_nodelen; /* nodename length */
char cl_nodename[UNX_MAXNODENAME];
char cl_pathname[30];/* Path in rpc_pipe_fs */
struct vfsmount * cl_vfsmnt;
struct dentry * cl_dentry; /* inode */
struct rpc_clnt * cl_parent; /* Points to parent of clones */
struct rpc_rtt cl_rtt_default;
struct rpc_program * cl_program;
char cl_inline_name[32];
};
/*
* 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 */
u32 p_statidx; /* Which procedure to account */
char * p_name; /* name of procedure */
};
#ifdef __KERNEL__
struct rpc_create_args {
int protocol;
struct sockaddr *address;
size_t addrsize;
struct rpc_timeout *timeout;
char *servername;
struct rpc_program *program;
u32 version;
rpc_authflavor_t authflavor;
unsigned long flags;
};
/* Values for "flags" field */
#define RPC_CLNT_CREATE_HARDRTRY (1UL << 0)
#define RPC_CLNT_CREATE_INTR (1UL << 1)
#define RPC_CLNT_CREATE_AUTOBIND (1UL << 2)
#define RPC_CLNT_CREATE_ONESHOT (1UL << 3)
#define RPC_CLNT_CREATE_NONPRIVPORT (1UL << 4)
#define RPC_CLNT_CREATE_NOPING (1UL << 5)
#define RPC_CLNT_CREATE_DISCRTRY (1UL << 6)
struct rpc_clnt *rpc_create(struct rpc_create_args *args);
struct rpc_clnt *rpc_bind_new_program(struct rpc_clnt *,
struct rpc_program *, int);
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 *);
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, const struct rpc_call_ops *tk_ops,
void *calldata);
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 *);
void rpc_force_rebind(struct rpc_clnt *);
int rpc_ping(struct rpc_clnt *clnt, int flags);
size_t rpc_peeraddr(struct rpc_clnt *, struct sockaddr *, size_t);
char * rpc_peeraddr2str(struct rpc_clnt *, enum rpc_display_format_t);
/*
* Helper function for NFSroot support
*/
int rpc_getport_external(struct sockaddr_in *, __u32, __u32, int);
#endif /* __KERNEL__ */
#endif /* _LINUX_SUNRPC_CLNT_H */

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/*
* linux/include/linux/sunrpc/debug.h
*
* Debugging support for sunrpc module
*
* Copyright (C) 1996, Olaf Kirch <okir@monad.swb.de>
*/
#ifndef _LINUX_SUNRPC_DEBUG_H_
#define _LINUX_SUNRPC_DEBUG_H_
/*
* RPC debug facilities
*/
#define RPCDBG_XPRT 0x0001
#define RPCDBG_CALL 0x0002
#define RPCDBG_DEBUG 0x0004
#define RPCDBG_NFS 0x0008
#define RPCDBG_AUTH 0x0010
#define RPCDBG_PMAP 0x0020
#define RPCDBG_SCHED 0x0040
#define RPCDBG_TRANS 0x0080
#define RPCDBG_SVCSOCK 0x0100
#define RPCDBG_SVCDSP 0x0200
#define RPCDBG_MISC 0x0400
#define RPCDBG_CACHE 0x0800
#define RPCDBG_ALL 0x7fff
#ifdef __KERNEL__
#include <linux/timer.h>
#include <linux/workqueue.h>
/*
* Enable RPC debugging/profiling.
*/
#ifdef CONFIG_SYSCTL
#define RPC_DEBUG
#endif
/* #define RPC_PROFILE */
/*
* Debugging macros etc
*/
#ifdef RPC_DEBUG
extern unsigned int rpc_debug;
extern unsigned int nfs_debug;
extern unsigned int nfsd_debug;
extern unsigned int nlm_debug;
#endif
#define dprintk(args...) dfprintk(FACILITY, ## args)
#undef ifdebug
#ifdef RPC_DEBUG
# define ifdebug(fac) if (unlikely(rpc_debug & RPCDBG_##fac))
# define dfprintk(fac, args...) do { ifdebug(fac) printk(args); } while(0)
# define RPC_IFDEBUG(x) x
#else
# define ifdebug(fac) if (0)
# define dfprintk(fac, args...) do ; while (0)
# define RPC_IFDEBUG(x)
#endif
/*
* Sysctl interface for RPC debugging
*/
#ifdef RPC_DEBUG
void rpc_register_sysctl(void);
void rpc_unregister_sysctl(void);
#endif
#endif /* __KERNEL__ */
/*
* Declarations for the sysctl debug interface, which allows to read or
* change the debug flags for rpc, nfs, nfsd, and lockd. Since the sunrpc
* module currently registers its sysctl table dynamically, the sysctl path
* for module FOO is <CTL_SUNRPC, CTL_FOODEBUG>.
*/
enum {
CTL_RPCDEBUG = 1,
CTL_NFSDEBUG,
CTL_NFSDDEBUG,
CTL_NLMDEBUG,
CTL_SLOTTABLE_UDP,
CTL_SLOTTABLE_TCP,
CTL_MIN_RESVPORT,
CTL_MAX_RESVPORT,
};
#endif /* _LINUX_SUNRPC_DEBUG_H_ */

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/*
* linux/include/linux/sunrpc/gss_api.h
*
* Somewhat simplified version of the gss api.
*
* Dug Song <dugsong@monkey.org>
* Andy Adamson <andros@umich.edu>
* Bruce Fields <bfields@umich.edu>
* Copyright (c) 2000 The Regents of the University of Michigan
*
* $Id: gss_api.h,v 1.1.1.1 2007/06/12 07:27:16 eyryu Exp $
*/
#ifndef _LINUX_SUNRPC_GSS_API_H
#define _LINUX_SUNRPC_GSS_API_H
#ifdef __KERNEL__
#include <linux/sunrpc/xdr.h>
#include <linux/uio.h>
/* The mechanism-independent gss-api context: */
struct gss_ctx {
struct gss_api_mech *mech_type;
void *internal_ctx_id;
};
#define GSS_C_NO_BUFFER ((struct xdr_netobj) 0)
#define GSS_C_NO_CONTEXT ((struct gss_ctx *) 0)
#define GSS_C_NULL_OID ((struct xdr_netobj) 0)
/*XXX arbitrary length - is this set somewhere? */
#define GSS_OID_MAX_LEN 32
/* gss-api prototypes; note that these are somewhat simplified versions of
* the prototypes specified in RFC 2744. */
int gss_import_sec_context(
const void* input_token,
size_t bufsize,
struct gss_api_mech *mech,
struct gss_ctx **ctx_id);
u32 gss_get_mic(
struct gss_ctx *ctx_id,
struct xdr_buf *message,
struct xdr_netobj *mic_token);
u32 gss_verify_mic(
struct gss_ctx *ctx_id,
struct xdr_buf *message,
struct xdr_netobj *mic_token);
u32 gss_wrap(
struct gss_ctx *ctx_id,
int offset,
struct xdr_buf *outbuf,
struct page **inpages);
u32 gss_unwrap(
struct gss_ctx *ctx_id,
int offset,
struct xdr_buf *inbuf);
u32 gss_delete_sec_context(
struct gss_ctx **ctx_id);
u32 gss_pseudoflavor_to_service(struct gss_api_mech *, u32 pseudoflavor);
char *gss_service_to_auth_domain_name(struct gss_api_mech *, u32 service);
struct pf_desc {
u32 pseudoflavor;
u32 service;
char *name;
char *auth_domain_name;
};
/* Different mechanisms (e.g., krb5 or spkm3) may implement gss-api, and
* mechanisms may be dynamically registered or unregistered by modules. */
/* Each mechanism is described by the following struct: */
struct gss_api_mech {
struct list_head gm_list;
struct module *gm_owner;
struct xdr_netobj gm_oid;
char *gm_name;
struct gss_api_ops *gm_ops;
/* pseudoflavors supported by this mechanism: */
int gm_pf_num;
struct pf_desc * gm_pfs;
};
/* and must provide the following operations: */
struct gss_api_ops {
int (*gss_import_sec_context)(
const void *input_token,
size_t bufsize,
struct gss_ctx *ctx_id);
u32 (*gss_get_mic)(
struct gss_ctx *ctx_id,
struct xdr_buf *message,
struct xdr_netobj *mic_token);
u32 (*gss_verify_mic)(
struct gss_ctx *ctx_id,
struct xdr_buf *message,
struct xdr_netobj *mic_token);
u32 (*gss_wrap)(
struct gss_ctx *ctx_id,
int offset,
struct xdr_buf *outbuf,
struct page **inpages);
u32 (*gss_unwrap)(
struct gss_ctx *ctx_id,
int offset,
struct xdr_buf *buf);
void (*gss_delete_sec_context)(
void *internal_ctx_id);
};
int gss_mech_register(struct gss_api_mech *);
void gss_mech_unregister(struct gss_api_mech *);
/* returns a mechanism descriptor given an OID, and increments the mechanism's
* reference count. */
struct gss_api_mech * gss_mech_get_by_OID(struct xdr_netobj *);
/* Returns a reference to a mechanism, given a name like "krb5" etc. */
struct gss_api_mech *gss_mech_get_by_name(const char *);
/* Similar, but get by pseudoflavor. */
struct gss_api_mech *gss_mech_get_by_pseudoflavor(u32);
/* Just increments the mechanism's reference count and returns its input: */
struct gss_api_mech * gss_mech_get(struct gss_api_mech *);
/* For every successful gss_mech_get or gss_mech_get_by_* call there must be a
* corresponding call to gss_mech_put. */
void gss_mech_put(struct gss_api_mech *);
#endif /* __KERNEL__ */
#endif /* _LINUX_SUNRPC_GSS_API_H */

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/*
* linux/include/linux/sunrpc/gss_asn1.h
*
* minimal asn1 for generic encoding/decoding of gss tokens
*
* Adapted from MIT Kerberos 5-1.2.1 lib/include/krb5.h,
* lib/gssapi/krb5/gssapiP_krb5.h, and others
*
* Copyright (c) 2000 The Regents of the University of Michigan.
* All rights reserved.
*
* Andy Adamson <andros@umich.edu>
*/
/*
* Copyright 1995 by the Massachusetts Institute of Technology.
* All Rights Reserved.
*
* Export of this software from the United States of America may
* require a specific license from the United States Government.
* It is the responsibility of any person or organization contemplating
* export to obtain such a license before exporting.
*
* WITHIN THAT CONSTRAINT, permission to use, copy, modify, and
* distribute this software and its documentation for any purpose and
* without fee is hereby granted, provided that the above copyright
* notice appear in all copies and that both that copyright notice and
* this permission notice appear in supporting documentation, and that
* the name of M.I.T. not be used in advertising or publicity pertaining
* to distribution of the software without specific, written prior
* permission. Furthermore if you modify this software you must label
* your software as modified software and not distribute it in such a
* fashion that it might be confused with the original M.I.T. software.
* M.I.T. makes no representations about the suitability of
* this software for any purpose. It is provided "as is" without express
* or implied warranty.
*
*/
#include <linux/sunrpc/gss_api.h>
#define SIZEOF_INT 4
/* from gssapi_err_generic.h */
#define G_BAD_SERVICE_NAME (-2045022976L)
#define G_BAD_STRING_UID (-2045022975L)
#define G_NOUSER (-2045022974L)
#define G_VALIDATE_FAILED (-2045022973L)
#define G_BUFFER_ALLOC (-2045022972L)
#define G_BAD_MSG_CTX (-2045022971L)
#define G_WRONG_SIZE (-2045022970L)
#define G_BAD_USAGE (-2045022969L)
#define G_UNKNOWN_QOP (-2045022968L)
#define G_NO_HOSTNAME (-2045022967L)
#define G_BAD_HOSTNAME (-2045022966L)
#define G_WRONG_MECH (-2045022965L)
#define G_BAD_TOK_HEADER (-2045022964L)
#define G_BAD_DIRECTION (-2045022963L)
#define G_TOK_TRUNC (-2045022962L)
#define G_REFLECT (-2045022961L)
#define G_WRONG_TOKID (-2045022960L)
#define g_OID_equal(o1,o2) \
(((o1)->len == (o2)->len) && \
(memcmp((o1)->data,(o2)->data,(int) (o1)->len) == 0))
u32 g_verify_token_header(
struct xdr_netobj *mech,
int *body_size,
unsigned char **buf_in,
int toksize);
int g_token_size(
struct xdr_netobj *mech,
unsigned int body_size);
void g_make_token_header(
struct xdr_netobj *mech,
int body_size,
unsigned char **buf);

167
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/*
* linux/include/sunrpc/gss_err.h
*
* Adapted from MIT Kerberos 5-1.2.1 include/gssapi/gssapi.h
*
* Copyright (c) 2002 The Regents of the University of Michigan.
* All rights reserved.
*
* Andy Adamson <andros@umich.edu>
*/
/*
* Copyright 1993 by OpenVision Technologies, Inc.
*
* Permission to use, copy, modify, distribute, and sell this software
* and its documentation for any purpose is hereby granted without fee,
* provided that the above copyright notice appears in all copies and
* that both that copyright notice and this permission notice appear in
* supporting documentation, and that the name of OpenVision not be used
* in advertising or publicity pertaining to distribution of the software
* without specific, written prior permission. OpenVision makes no
* representations about the suitability of this software for any
* purpose. It is provided "as is" without express or implied warranty.
*
* OPENVISION DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
* INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
* EVENT SHALL OPENVISION BE LIABLE FOR ANY SPECIAL, INDIRECT OR
* CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF
* USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR
* OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
* PERFORMANCE OF THIS SOFTWARE.
*/
#ifndef _LINUX_SUNRPC_GSS_ERR_H
#define _LINUX_SUNRPC_GSS_ERR_H
#ifdef __KERNEL__
typedef unsigned int OM_uint32;
/*
* Flag bits for context-level services.
*/
#define GSS_C_DELEG_FLAG 1
#define GSS_C_MUTUAL_FLAG 2
#define GSS_C_REPLAY_FLAG 4
#define GSS_C_SEQUENCE_FLAG 8
#define GSS_C_CONF_FLAG 16
#define GSS_C_INTEG_FLAG 32
#define GSS_C_ANON_FLAG 64
#define GSS_C_PROT_READY_FLAG 128
#define GSS_C_TRANS_FLAG 256
/*
* Credential usage options
*/
#define GSS_C_BOTH 0
#define GSS_C_INITIATE 1
#define GSS_C_ACCEPT 2
/*
* Status code types for gss_display_status
*/
#define GSS_C_GSS_CODE 1
#define GSS_C_MECH_CODE 2
/*
* Expiration time of 2^32-1 seconds means infinite lifetime for a
* credential or security context
*/
#define GSS_C_INDEFINITE ((OM_uint32) 0xfffffffful)
/* Major status codes */
#define GSS_S_COMPLETE 0
/*
* Some "helper" definitions to make the status code macros obvious.
*/
#define GSS_C_CALLING_ERROR_OFFSET 24
#define GSS_C_ROUTINE_ERROR_OFFSET 16
#define GSS_C_SUPPLEMENTARY_OFFSET 0
#define GSS_C_CALLING_ERROR_MASK ((OM_uint32) 0377ul)
#define GSS_C_ROUTINE_ERROR_MASK ((OM_uint32) 0377ul)
#define GSS_C_SUPPLEMENTARY_MASK ((OM_uint32) 0177777ul)
/*
* The macros that test status codes for error conditions. Note that the
* GSS_ERROR() macro has changed slightly from the V1 GSSAPI so that it now
* evaluates its argument only once.
*/
#define GSS_CALLING_ERROR(x) \
((x) & (GSS_C_CALLING_ERROR_MASK << GSS_C_CALLING_ERROR_OFFSET))
#define GSS_ROUTINE_ERROR(x) \
((x) & (GSS_C_ROUTINE_ERROR_MASK << GSS_C_ROUTINE_ERROR_OFFSET))
#define GSS_SUPPLEMENTARY_INFO(x) \
((x) & (GSS_C_SUPPLEMENTARY_MASK << GSS_C_SUPPLEMENTARY_OFFSET))
#define GSS_ERROR(x) \
((x) & ((GSS_C_CALLING_ERROR_MASK << GSS_C_CALLING_ERROR_OFFSET) | \
(GSS_C_ROUTINE_ERROR_MASK << GSS_C_ROUTINE_ERROR_OFFSET)))
/*
* Now the actual status code definitions
*/
/*
* Calling errors:
*/
#define GSS_S_CALL_INACCESSIBLE_READ \
(((OM_uint32) 1ul) << GSS_C_CALLING_ERROR_OFFSET)
#define GSS_S_CALL_INACCESSIBLE_WRITE \
(((OM_uint32) 2ul) << GSS_C_CALLING_ERROR_OFFSET)
#define GSS_S_CALL_BAD_STRUCTURE \
(((OM_uint32) 3ul) << GSS_C_CALLING_ERROR_OFFSET)
/*
* Routine errors:
*/
#define GSS_S_BAD_MECH (((OM_uint32) 1ul) << GSS_C_ROUTINE_ERROR_OFFSET)
#define GSS_S_BAD_NAME (((OM_uint32) 2ul) << GSS_C_ROUTINE_ERROR_OFFSET)
#define GSS_S_BAD_NAMETYPE (((OM_uint32) 3ul) << GSS_C_ROUTINE_ERROR_OFFSET)
#define GSS_S_BAD_BINDINGS (((OM_uint32) 4ul) << GSS_C_ROUTINE_ERROR_OFFSET)
#define GSS_S_BAD_STATUS (((OM_uint32) 5ul) << GSS_C_ROUTINE_ERROR_OFFSET)
#define GSS_S_BAD_SIG (((OM_uint32) 6ul) << GSS_C_ROUTINE_ERROR_OFFSET)
#define GSS_S_NO_CRED (((OM_uint32) 7ul) << GSS_C_ROUTINE_ERROR_OFFSET)
#define GSS_S_NO_CONTEXT (((OM_uint32) 8ul) << GSS_C_ROUTINE_ERROR_OFFSET)
#define GSS_S_DEFECTIVE_TOKEN (((OM_uint32) 9ul) << GSS_C_ROUTINE_ERROR_OFFSET)
#define GSS_S_DEFECTIVE_CREDENTIAL \
(((OM_uint32) 10ul) << GSS_C_ROUTINE_ERROR_OFFSET)
#define GSS_S_CREDENTIALS_EXPIRED \
(((OM_uint32) 11ul) << GSS_C_ROUTINE_ERROR_OFFSET)
#define GSS_S_CONTEXT_EXPIRED \
(((OM_uint32) 12ul) << GSS_C_ROUTINE_ERROR_OFFSET)
#define GSS_S_FAILURE (((OM_uint32) 13ul) << GSS_C_ROUTINE_ERROR_OFFSET)
#define GSS_S_BAD_QOP (((OM_uint32) 14ul) << GSS_C_ROUTINE_ERROR_OFFSET)
#define GSS_S_UNAUTHORIZED (((OM_uint32) 15ul) << GSS_C_ROUTINE_ERROR_OFFSET)
#define GSS_S_UNAVAILABLE (((OM_uint32) 16ul) << GSS_C_ROUTINE_ERROR_OFFSET)
#define GSS_S_DUPLICATE_ELEMENT \
(((OM_uint32) 17ul) << GSS_C_ROUTINE_ERROR_OFFSET)
#define GSS_S_NAME_NOT_MN \
(((OM_uint32) 18ul) << GSS_C_ROUTINE_ERROR_OFFSET)
/*
* Supplementary info bits:
*/
#define GSS_S_CONTINUE_NEEDED (1 << (GSS_C_SUPPLEMENTARY_OFFSET + 0))
#define GSS_S_DUPLICATE_TOKEN (1 << (GSS_C_SUPPLEMENTARY_OFFSET + 1))
#define GSS_S_OLD_TOKEN (1 << (GSS_C_SUPPLEMENTARY_OFFSET + 2))
#define GSS_S_UNSEQ_TOKEN (1 << (GSS_C_SUPPLEMENTARY_OFFSET + 3))
#define GSS_S_GAP_TOKEN (1 << (GSS_C_SUPPLEMENTARY_OFFSET + 4))
/* XXXX these are not part of the GSSAPI C bindings! (but should be) */
#define GSS_CALLING_ERROR_FIELD(x) \
(((x) >> GSS_C_CALLING_ERROR_OFFSET) & GSS_C_CALLING_ERROR_MASK)
#define GSS_ROUTINE_ERROR_FIELD(x) \
(((x) >> GSS_C_ROUTINE_ERROR_OFFSET) & GSS_C_ROUTINE_ERROR_MASK)
#define GSS_SUPPLEMENTARY_INFO_FIELD(x) \
(((x) >> GSS_C_SUPPLEMENTARY_OFFSET) & GSS_C_SUPPLEMENTARY_MASK)
/* XXXX This is a necessary evil until the spec is fixed */
#define GSS_S_CRED_UNAVAIL GSS_S_FAILURE
#endif /* __KERNEL__ */
#endif /* __LINUX_SUNRPC_GSS_ERR_H */

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include/linux/sunrpc/gss_krb5.h Normal file
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/*
* linux/include/linux/sunrpc/gss_krb5_types.h
*
* Adapted from MIT Kerberos 5-1.2.1 lib/include/krb5.h,
* lib/gssapi/krb5/gssapiP_krb5.h, and others
*
* Copyright (c) 2000 The Regents of the University of Michigan.
* All rights reserved.
*
* Andy Adamson <andros@umich.edu>
* Bruce Fields <bfields@umich.edu>
*/
/*
* Copyright 1995 by the Massachusetts Institute of Technology.
* All Rights Reserved.
*
* Export of this software from the United States of America may
* require a specific license from the United States Government.
* It is the responsibility of any person or organization contemplating
* export to obtain such a license before exporting.
*
* WITHIN THAT CONSTRAINT, permission to use, copy, modify, and
* distribute this software and its documentation for any purpose and
* without fee is hereby granted, provided that the above copyright
* notice appear in all copies and that both that copyright notice and
* this permission notice appear in supporting documentation, and that
* the name of M.I.T. not be used in advertising or publicity pertaining
* to distribution of the software without specific, written prior
* permission. Furthermore if you modify this software you must label
* your software as modified software and not distribute it in such a
* fashion that it might be confused with the original M.I.T. software.
* M.I.T. makes no representations about the suitability of
* this software for any purpose. It is provided "as is" without express
* or implied warranty.
*
*/
#include <linux/sunrpc/auth_gss.h>
#include <linux/sunrpc/gss_err.h>
#include <linux/sunrpc/gss_asn1.h>
struct krb5_ctx {
int initiate; /* 1 = initiating, 0 = accepting */
struct crypto_blkcipher *enc;
struct crypto_blkcipher *seq;
s32 endtime;
u32 seq_send;
struct xdr_netobj mech_used;
};
extern spinlock_t krb5_seq_lock;
#define KG_TOK_MIC_MSG 0x0101
#define KG_TOK_WRAP_MSG 0x0201
enum sgn_alg {
SGN_ALG_DES_MAC_MD5 = 0x0000,
SGN_ALG_MD2_5 = 0x0001,
SGN_ALG_DES_MAC = 0x0002,
SGN_ALG_3 = 0x0003, /* not published */
SGN_ALG_HMAC_MD5 = 0x0011, /* microsoft w2k; no support */
SGN_ALG_HMAC_SHA1_DES3_KD = 0x0004
};
enum seal_alg {
SEAL_ALG_NONE = 0xffff,
SEAL_ALG_DES = 0x0000,
SEAL_ALG_1 = 0x0001, /* not published */
SEAL_ALG_MICROSOFT_RC4 = 0x0010,/* microsoft w2k; no support */
SEAL_ALG_DES3KD = 0x0002
};
#define KRB5_CKSUM_LENGTH 8
#define CKSUMTYPE_CRC32 0x0001
#define CKSUMTYPE_RSA_MD4 0x0002
#define CKSUMTYPE_RSA_MD4_DES 0x0003
#define CKSUMTYPE_DESCBC 0x0004
#define CKSUMTYPE_RSA_MD5 0x0007
#define CKSUMTYPE_RSA_MD5_DES 0x0008
#define CKSUMTYPE_NIST_SHA 0x0009
#define CKSUMTYPE_HMAC_SHA1_DES3 0x000c
/* from gssapi_err_krb5.h */
#define KG_CCACHE_NOMATCH (39756032L)
#define KG_KEYTAB_NOMATCH (39756033L)
#define KG_TGT_MISSING (39756034L)
#define KG_NO_SUBKEY (39756035L)
#define KG_CONTEXT_ESTABLISHED (39756036L)
#define KG_BAD_SIGN_TYPE (39756037L)
#define KG_BAD_LENGTH (39756038L)
#define KG_CTX_INCOMPLETE (39756039L)
#define KG_CONTEXT (39756040L)
#define KG_CRED (39756041L)
#define KG_ENC_DESC (39756042L)
#define KG_BAD_SEQ (39756043L)
#define KG_EMPTY_CCACHE (39756044L)
#define KG_NO_CTYPES (39756045L)
/* per Kerberos v5 protocol spec crypto types from the wire.
* these get mapped to linux kernel crypto routines.
*/
#define ENCTYPE_NULL 0x0000
#define ENCTYPE_DES_CBC_CRC 0x0001 /* DES cbc mode with CRC-32 */
#define ENCTYPE_DES_CBC_MD4 0x0002 /* DES cbc mode with RSA-MD4 */
#define ENCTYPE_DES_CBC_MD5 0x0003 /* DES cbc mode with RSA-MD5 */
#define ENCTYPE_DES_CBC_RAW 0x0004 /* DES cbc mode raw */
/* XXX deprecated? */
#define ENCTYPE_DES3_CBC_SHA 0x0005 /* DES-3 cbc mode with NIST-SHA */
#define ENCTYPE_DES3_CBC_RAW 0x0006 /* DES-3 cbc mode raw */
#define ENCTYPE_DES_HMAC_SHA1 0x0008
#define ENCTYPE_DES3_CBC_SHA1 0x0010
#define ENCTYPE_UNKNOWN 0x01ff
s32
make_checksum(char *, char *header, int hdrlen, struct xdr_buf *body,
int body_offset, struct xdr_netobj *cksum);
u32 gss_get_mic_kerberos(struct gss_ctx *, struct xdr_buf *,
struct xdr_netobj *);
u32 gss_verify_mic_kerberos(struct gss_ctx *, struct xdr_buf *,
struct xdr_netobj *);
u32
gss_wrap_kerberos(struct gss_ctx *ctx_id, int offset,
struct xdr_buf *outbuf, struct page **pages);
u32
gss_unwrap_kerberos(struct gss_ctx *ctx_id, int offset,
struct xdr_buf *buf);
u32
krb5_encrypt(struct crypto_blkcipher *key,
void *iv, void *in, void *out, int length);
u32
krb5_decrypt(struct crypto_blkcipher *key,
void *iv, void *in, void *out, int length);
int
gss_encrypt_xdr_buf(struct crypto_blkcipher *tfm, struct xdr_buf *outbuf,
int offset, struct page **pages);
int
gss_decrypt_xdr_buf(struct crypto_blkcipher *tfm, struct xdr_buf *inbuf,
int offset);
s32
krb5_make_seq_num(struct crypto_blkcipher *key,
int direction,
s32 seqnum, unsigned char *cksum, unsigned char *buf);
s32
krb5_get_seq_num(struct crypto_blkcipher *key,
unsigned char *cksum,
unsigned char *buf, int *direction, s32 * seqnum);

55
include/linux/sunrpc/gss_spkm3.h Normal file
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/*
* linux/include/linux/sunrpc/gss_spkm3.h
*
* Copyright (c) 2000 The Regents of the University of Michigan.
* All rights reserved.
*
* Andy Adamson <andros@umich.edu>
*/
#include <linux/sunrpc/auth_gss.h>
#include <linux/sunrpc/gss_err.h>
#include <linux/sunrpc/gss_asn1.h>
struct spkm3_ctx {
struct xdr_netobj ctx_id; /* per message context id */
int endtime; /* endtime of the context */
struct xdr_netobj mech_used;
unsigned int ret_flags ;
struct xdr_netobj conf_alg;
struct xdr_netobj derived_conf_key;
struct xdr_netobj intg_alg;
struct xdr_netobj derived_integ_key;
};
/* OIDs declarations for K-ALG, I-ALG, C-ALG, and OWF-ALG */
extern const struct xdr_netobj hmac_md5_oid;
extern const struct xdr_netobj cast5_cbc_oid;
/* SPKM InnerContext Token types */
#define SPKM_ERROR_TOK 3
#define SPKM_MIC_TOK 4
#define SPKM_WRAP_TOK 5
#define SPKM_DEL_TOK 6
u32 spkm3_make_token(struct spkm3_ctx *ctx, struct xdr_buf * text, struct xdr_netobj * token, int toktype);
u32 spkm3_read_token(struct spkm3_ctx *ctx, struct xdr_netobj *read_token, struct xdr_buf *message_buffer, int toktype);
#define CKSUMTYPE_RSA_MD5 0x0007
#define CKSUMTYPE_HMAC_MD5 0x0008
s32 make_spkm3_checksum(s32 cksumtype, struct xdr_netobj *key, char *header,
unsigned int hdrlen, struct xdr_buf *body,
unsigned int body_offset, struct xdr_netobj *cksum);
void asn1_bitstring_len(struct xdr_netobj *in, int *enclen, int *zerobits);
int decode_asn1_bitstring(struct xdr_netobj *out, char *in, int enclen,
int explen);
void spkm3_mic_header(unsigned char **hdrbuf, unsigned int *hdrlen,
unsigned char *ctxhdr, int elen, int zbit);
void spkm3_make_mic_token(unsigned char **tokp, int toklen,
struct xdr_netobj *mic_hdr,
struct xdr_netobj *md5cksum, int md5elen, int md5zbit);
u32 spkm3_verify_mic_token(unsigned char **tokp, int *mic_hdrlen,
unsigned char **cksum);

89
include/linux/sunrpc/metrics.h Normal file
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/*
* linux/include/linux/sunrpc/metrics.h
*
* Declarations for RPC client per-operation metrics
*
* Copyright (C) 2005 Chuck Lever <cel@netapp.com>
*
* RPC client per-operation statistics provide latency and retry
* information about each type of RPC procedure in a given RPC program.
* These statistics are not for detailed problem diagnosis, but simply
* to indicate whether the problem is local or remote.
*
* These counters are not meant to be human-readable, but are meant to be
* integrated into system monitoring tools such as "sar" and "iostat". As
* such, the counters are sampled by the tools over time, and are never
* zeroed after a file system is mounted. Moving averages can be computed
* by the tools by taking the difference between two instantaneous samples
* and dividing that by the time between the samples.
*
* The counters are maintained in a single array per RPC client, indexed
* by procedure number. There is no need to maintain separate counter
* arrays per-CPU because these counters are always modified behind locks.
*/
#ifndef _LINUX_SUNRPC_METRICS_H
#define _LINUX_SUNRPC_METRICS_H
#include <linux/seq_file.h>
#define RPC_IOSTATS_VERS "1.0"
struct rpc_iostats {
/*
* These counters give an idea about how many request
* transmissions are required, on average, to complete that
* particular procedure. Some procedures may require more
* than one transmission because the server is unresponsive,
* the client is retransmitting too aggressively, or the
* requests are large and the network is congested.
*/
unsigned long om_ops, /* count of operations */
om_ntrans, /* count of RPC transmissions */
om_timeouts; /* count of major timeouts */
/*
* These count how many bytes are sent and received for a
* given RPC procedure type. This indicates how much load a
* particular procedure is putting on the network. These
* counts include the RPC and ULP headers, and the request
* payload.
*/
unsigned long long om_bytes_sent, /* count of bytes out */
om_bytes_recv; /* count of bytes in */
/*
* The length of time an RPC request waits in queue before
* transmission, the network + server latency of the request,
* and the total time the request spent from init to release
* are measured.
*/
unsigned long long om_queue, /* jiffies queued for xmit */
om_rtt, /* jiffies for RPC RTT */
om_execute; /* jiffies for RPC execution */
} ____cacheline_aligned;
struct rpc_task;
struct rpc_clnt;
/*
* EXPORTed functions for managing rpc_iostats structures
*/
#ifdef CONFIG_PROC_FS
struct rpc_iostats * rpc_alloc_iostats(struct rpc_clnt *);
void rpc_count_iostats(struct rpc_task *);
void rpc_print_iostats(struct seq_file *, struct rpc_clnt *);
void rpc_free_iostats(struct rpc_iostats *);
#else /* CONFIG_PROC_FS */
static inline struct rpc_iostats *rpc_alloc_iostats(struct rpc_clnt *clnt) { return NULL; }
static inline void rpc_count_iostats(struct rpc_task *task) {}
static inline void rpc_print_iostats(struct seq_file *seq, struct rpc_clnt *clnt) {}
static inline void rpc_free_iostats(struct rpc_iostats *stats) {}
#endif /* CONFIG_PROC_FS */
#endif /* _LINUX_SUNRPC_METRICS_H */

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/*
* linux/include/linux/sunrpc/msg_prot.h
*
* Copyright (C) 1996, Olaf Kirch <okir@monad.swb.de>
*/
#ifndef _LINUX_SUNRPC_MSGPROT_H_
#define _LINUX_SUNRPC_MSGPROT_H_
#ifdef __KERNEL__ /* user programs should get these from the rpc header files */
#define RPC_VERSION 2
/* size of an XDR encoding unit in bytes, i.e. 32bit */
#define XDR_UNIT (4)
/* spec defines authentication flavor as an unsigned 32 bit integer */
typedef u32 rpc_authflavor_t;
enum rpc_auth_flavors {
RPC_AUTH_NULL = 0,
RPC_AUTH_UNIX = 1,
RPC_AUTH_SHORT = 2,
RPC_AUTH_DES = 3,
RPC_AUTH_KRB = 4,
RPC_AUTH_GSS = 6,
RPC_AUTH_MAXFLAVOR = 8,
/* pseudoflavors: */
RPC_AUTH_GSS_KRB5 = 390003,
RPC_AUTH_GSS_KRB5I = 390004,
RPC_AUTH_GSS_KRB5P = 390005,
RPC_AUTH_GSS_LKEY = 390006,
RPC_AUTH_GSS_LKEYI = 390007,
RPC_AUTH_GSS_LKEYP = 390008,
RPC_AUTH_GSS_SPKM = 390009,
RPC_AUTH_GSS_SPKMI = 390010,
RPC_AUTH_GSS_SPKMP = 390011,
};
/* Maximum size (in bytes) of an rpc credential or verifier */
#define RPC_MAX_AUTH_SIZE (400)
enum rpc_msg_type {
RPC_CALL = 0,
RPC_REPLY = 1
};
enum rpc_reply_stat {
RPC_MSG_ACCEPTED = 0,
RPC_MSG_DENIED = 1
};
enum rpc_accept_stat {
RPC_SUCCESS = 0,
RPC_PROG_UNAVAIL = 1,
RPC_PROG_MISMATCH = 2,
RPC_PROC_UNAVAIL = 3,
RPC_GARBAGE_ARGS = 4,
RPC_SYSTEM_ERR = 5,
/* internal use only */
RPC_DROP_REPLY = 60000,
};
enum rpc_reject_stat {
RPC_MISMATCH = 0,
RPC_AUTH_ERROR = 1
};
enum rpc_auth_stat {
RPC_AUTH_OK = 0,
RPC_AUTH_BADCRED = 1,
RPC_AUTH_REJECTEDCRED = 2,
RPC_AUTH_BADVERF = 3,
RPC_AUTH_REJECTEDVERF = 4,
RPC_AUTH_TOOWEAK = 5,
/* RPCSEC_GSS errors */
RPCSEC_GSS_CREDPROBLEM = 13,
RPCSEC_GSS_CTXPROBLEM = 14
};
#define RPC_PMAP_PROGRAM 100000
#define RPC_PMAP_VERSION 2
#define RPC_PMAP_PORT 111
#define RPC_MAXNETNAMELEN 256
/*
* From RFC 1831:
*
* "A record is composed of one or more record fragments. A record
* fragment is a four-byte header followed by 0 to (2**31) - 1 bytes of
* fragment data. The bytes encode an unsigned binary number; as with
* XDR integers, the byte order is from highest to lowest. The number
* encodes two values -- a boolean which indicates whether the fragment
* is the last fragment of the record (bit value 1 implies the fragment
* is the last fragment) and a 31-bit unsigned binary value which is the
* length in bytes of the fragment's data. The boolean value is the
* highest-order bit of the header; the length is the 31 low-order bits.
* (Note that this record specification is NOT in XDR standard form!)"
*
* The Linux RPC client always sends its requests in a single record
* fragment, limiting the maximum payload size for stream transports to
* 2GB.
*/
typedef __be32 rpc_fraghdr;
#define RPC_LAST_STREAM_FRAGMENT (1U << 31)
#define RPC_FRAGMENT_SIZE_MASK (~RPC_LAST_STREAM_FRAGMENT)
#define RPC_MAX_FRAGMENT_SIZE ((1U << 31) - 1)
/*
* RPC call and reply header size as number of 32bit words (verifier
* size computed separately, see below)
*/
#define RPC_CALLHDRSIZE (6)
#define RPC_REPHDRSIZE (4)
/*
* Maximum RPC header size, including authentication,
* as number of 32bit words (see RFCs 1831, 1832).
*
* xid 1 xdr unit = 4 bytes
* mtype 1
* rpc_version 1
* program 1
* prog_version 1
* procedure 1
* cred {
* flavor 1
* length 1
* body<RPC_MAX_AUTH_SIZE> 100 xdr units = 400 bytes
* }
* verf {
* flavor 1
* length 1
* body<RPC_MAX_AUTH_SIZE> 100 xdr units = 400 bytes
* }
* TOTAL 210 xdr units = 840 bytes
*/
#define RPC_MAX_HEADER_WITH_AUTH \
(RPC_CALLHDRSIZE + 2*(2+RPC_MAX_AUTH_SIZE/4))
#endif /* __KERNEL__ */
#endif /* _LINUX_SUNRPC_MSGPROT_H_ */

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#ifndef _LINUX_SUNRPC_RPC_PIPE_FS_H
#define _LINUX_SUNRPC_RPC_PIPE_FS_H
#ifdef __KERNEL__
struct rpc_pipe_msg {
struct list_head list;
void *data;
size_t len;
size_t copied;
int errno;
};
struct rpc_pipe_ops {
ssize_t (*upcall)(struct file *, struct rpc_pipe_msg *, char __user *, size_t);
ssize_t (*downcall)(struct file *, const char __user *, size_t);
void (*release_pipe)(struct inode *);
void (*destroy_msg)(struct rpc_pipe_msg *);
};
struct rpc_inode {
struct inode vfs_inode;
void *private;
struct list_head pipe;
struct list_head in_upcall;
int pipelen;
int nreaders;
int nwriters;
wait_queue_head_t waitq;
#define RPC_PIPE_WAIT_FOR_OPEN 1
int flags;
struct rpc_pipe_ops *ops;
struct delayed_work queue_timeout;
};
static inline struct rpc_inode *
RPC_I(struct inode *inode)
{
return container_of(inode, struct rpc_inode, vfs_inode);
}
extern int rpc_queue_upcall(struct inode *, struct rpc_pipe_msg *);
extern struct dentry *rpc_mkdir(char *, struct rpc_clnt *);
extern int rpc_rmdir(struct dentry *);
extern struct dentry *rpc_mkpipe(struct dentry *, const char *, void *, struct rpc_pipe_ops *, int flags);
extern int rpc_unlink(struct dentry *);
extern struct vfsmount *rpc_get_mount(void);
extern void rpc_put_mount(void);
#endif
#endif

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/*
* linux/include/linux/sunrpc/sched.h
*
* Scheduling primitives for kernel Sun RPC.
*
* Copyright (C) 1996, Olaf Kirch <okir@monad.swb.de>
*/
#ifndef _LINUX_SUNRPC_SCHED_H_
#define _LINUX_SUNRPC_SCHED_H_
#include <linux/timer.h>
#include <linux/sunrpc/types.h>
#include <linux/rcupdate.h>
#include <linux/spinlock.h>
#include <linux/wait.h>
#include <linux/workqueue.h>
#include <linux/sunrpc/xdr.h>
/*
* This is the actual RPC procedure call info.
*/
struct rpc_procinfo;
struct rpc_message {
struct rpc_procinfo * rpc_proc; /* Procedure information */
void * rpc_argp; /* Arguments */
void * rpc_resp; /* Result */
struct rpc_cred * rpc_cred; /* Credentials */
};
struct rpc_call_ops;
struct rpc_wait_queue;
struct rpc_wait {
struct list_head list; /* wait queue links */
struct list_head links; /* Links to related tasks */
struct rpc_wait_queue * rpc_waitq; /* RPC wait queue we're on */
};
/*
* This is the RPC task struct
*/
struct rpc_task {
#ifdef RPC_DEBUG
unsigned long tk_magic; /* 0xf00baa */
#endif
atomic_t tk_count; /* Reference count */
struct list_head tk_task; /* global list of tasks */
struct rpc_clnt * tk_client; /* RPC client */
struct rpc_rqst * tk_rqstp; /* RPC request */
int tk_status; /* result of last operation */
/*
* RPC call state
*/
struct rpc_message tk_msg; /* RPC call info */
__u8 tk_garb_retry;
__u8 tk_cred_retry;
unsigned long tk_cookie; /* Cookie for batching tasks */
/*
* timeout_fn to be executed by timer bottom half
* callback to be executed after waking up
* action next procedure for async tasks
* tk_ops caller callbacks
*/
void (*tk_timeout_fn)(struct rpc_task *);
void (*tk_callback)(struct rpc_task *);
void (*tk_action)(struct rpc_task *);
const struct rpc_call_ops *tk_ops;
void * tk_calldata;
/*
* tk_timer is used for async processing by the RPC scheduling
* primitives. You should not access this directly unless
* you have a pathological interest in kernel oopses.
*/
struct timer_list tk_timer; /* kernel timer */
unsigned long tk_timeout; /* timeout for rpc_sleep() */
unsigned short tk_flags; /* misc flags */
unsigned char tk_priority : 2;/* Task priority */
unsigned long tk_runstate; /* Task run status */
struct workqueue_struct *tk_workqueue; /* Normally rpciod, but could
* be any workqueue
*/
union {
struct work_struct tk_work; /* Async task work queue */
struct rpc_wait tk_wait; /* RPC wait */
struct rcu_head tk_rcu; /* for task deletion */
} u;
unsigned short tk_timeouts; /* maj timeouts */
size_t tk_bytes_sent; /* total bytes sent */
unsigned long tk_start; /* RPC task init timestamp */
long tk_rtt; /* round-trip time (jiffies) */
#ifdef RPC_DEBUG
unsigned short tk_pid; /* debugging aid */
#endif
};
#define tk_auth tk_client->cl_auth
#define tk_xprt tk_client->cl_xprt
/* support walking a list of tasks on a wait queue */
#define task_for_each(task, pos, head) \
list_for_each(pos, head) \
if ((task=list_entry(pos, struct rpc_task, u.tk_wait.list)),1)
#define task_for_first(task, head) \
if (!list_empty(head) && \
((task=list_entry((head)->next, struct rpc_task, u.tk_wait.list)),1))
/* .. and walking list of all tasks */
#define alltask_for_each(task, pos, head) \
list_for_each(pos, head) \
if ((task=list_entry(pos, struct rpc_task, tk_task)),1)
typedef void (*rpc_action)(struct rpc_task *);
struct rpc_call_ops {
void (*rpc_call_prepare)(struct rpc_task *, void *);
void (*rpc_call_done)(struct rpc_task *, void *);
void (*rpc_release)(void *);
};
/*
* RPC task flags
*/
#define RPC_TASK_ASYNC 0x0001 /* is an async task */
#define RPC_TASK_SWAPPER 0x0002 /* is swapping in/out */
#define RPC_CALL_MAJORSEEN 0x0020 /* major timeout seen */
#define RPC_TASK_ROOTCREDS 0x0040 /* force root creds */
#define RPC_TASK_DYNAMIC 0x0080 /* task was kmalloc'ed */
#define RPC_TASK_KILLED 0x0100 /* task was killed */
#define RPC_TASK_SOFT 0x0200 /* Use soft timeouts */
#define RPC_TASK_NOINTR 0x0400 /* uninterruptible task */
#define RPC_IS_ASYNC(t) ((t)->tk_flags & RPC_TASK_ASYNC)
#define RPC_IS_SWAPPER(t) ((t)->tk_flags & RPC_TASK_SWAPPER)
#define RPC_DO_ROOTOVERRIDE(t) ((t)->tk_flags & RPC_TASK_ROOTCREDS)
#define RPC_ASSASSINATED(t) ((t)->tk_flags & RPC_TASK_KILLED)
#define RPC_DO_CALLBACK(t) ((t)->tk_callback != NULL)
#define RPC_IS_SOFT(t) ((t)->tk_flags & RPC_TASK_SOFT)
#define RPC_TASK_UNINTERRUPTIBLE(t) ((t)->tk_flags & RPC_TASK_NOINTR)
#define RPC_TASK_RUNNING 0
#define RPC_TASK_QUEUED 1
#define RPC_TASK_WAKEUP 2
#define RPC_TASK_HAS_TIMER 3
#define RPC_TASK_ACTIVE 4
#define RPC_IS_RUNNING(t) test_bit(RPC_TASK_RUNNING, &(t)->tk_runstate)
#define rpc_set_running(t) set_bit(RPC_TASK_RUNNING, &(t)->tk_runstate)
#define rpc_test_and_set_running(t) \
test_and_set_bit(RPC_TASK_RUNNING, &(t)->tk_runstate)
#define rpc_clear_running(t) \
do { \
smp_mb__before_clear_bit(); \
clear_bit(RPC_TASK_RUNNING, &(t)->tk_runstate); \
smp_mb__after_clear_bit(); \
} while (0)
#define RPC_IS_QUEUED(t) test_bit(RPC_TASK_QUEUED, &(t)->tk_runstate)
#define rpc_set_queued(t) set_bit(RPC_TASK_QUEUED, &(t)->tk_runstate)
#define rpc_clear_queued(t) \
do { \
smp_mb__before_clear_bit(); \
clear_bit(RPC_TASK_QUEUED, &(t)->tk_runstate); \
smp_mb__after_clear_bit(); \
} while (0)
#define rpc_start_wakeup(t) \
(test_and_set_bit(RPC_TASK_WAKEUP, &(t)->tk_runstate) == 0)
#define rpc_finish_wakeup(t) \
do { \
smp_mb__before_clear_bit(); \
clear_bit(RPC_TASK_WAKEUP, &(t)->tk_runstate); \
smp_mb__after_clear_bit(); \
} while (0)
#define RPC_IS_ACTIVATED(t) test_bit(RPC_TASK_ACTIVE, &(t)->tk_runstate)
/*
* Task priorities.
* Note: if you change these, you must also change
* the task initialization definitions below.
*/
#define RPC_PRIORITY_LOW 0
#define RPC_PRIORITY_NORMAL 1
#define RPC_PRIORITY_HIGH 2
#define RPC_NR_PRIORITY (RPC_PRIORITY_HIGH+1)
/*
* RPC synchronization objects
*/
struct rpc_wait_queue {
spinlock_t lock;
struct list_head tasks[RPC_NR_PRIORITY]; /* task queue for each priority level */
unsigned long cookie; /* cookie of last task serviced */
unsigned char maxpriority; /* maximum priority (0 if queue is not a priority queue) */
unsigned char priority; /* current priority */
unsigned char count; /* # task groups remaining serviced so far */
unsigned char nr; /* # tasks remaining for cookie */
unsigned short qlen; /* total # tasks waiting in queue */
#ifdef RPC_DEBUG
const char * name;
#endif
};
/*
* This is the # requests to send consecutively
* from a single cookie. The aim is to improve
* performance of NFS operations such as read/write.
*/
#define RPC_BATCH_COUNT 16
#ifndef RPC_DEBUG
# define RPC_WAITQ_INIT(var,qname) { \
.lock = __SPIN_LOCK_UNLOCKED(var.lock), \
.tasks = { \
[0] = LIST_HEAD_INIT(var.tasks[0]), \
[1] = LIST_HEAD_INIT(var.tasks[1]), \
[2] = LIST_HEAD_INIT(var.tasks[2]), \
}, \
}
#else
# define RPC_WAITQ_INIT(var,qname) { \
.lock = __SPIN_LOCK_UNLOCKED(var.lock), \
.tasks = { \
[0] = LIST_HEAD_INIT(var.tasks[0]), \
[1] = LIST_HEAD_INIT(var.tasks[1]), \
[2] = LIST_HEAD_INIT(var.tasks[2]), \
}, \
.name = qname, \
}
#endif
# define RPC_WAITQ(var,qname) struct rpc_wait_queue var = RPC_WAITQ_INIT(var,qname)
#define RPC_IS_PRIORITY(q) ((q)->maxpriority > 0)
/*
* Function prototypes
*/
struct rpc_task *rpc_new_task(struct rpc_clnt *, int flags,
const struct rpc_call_ops *ops, void *data);
struct rpc_task *rpc_run_task(struct rpc_clnt *clnt, int flags,
const struct rpc_call_ops *ops, void *data);
void rpc_init_task(struct rpc_task *task, struct rpc_clnt *clnt,
int flags, const struct rpc_call_ops *ops,
void *data);
void rpc_put_task(struct rpc_task *);
void rpc_exit_task(struct rpc_task *);
void rpc_release_calldata(const struct rpc_call_ops *, void *);
void rpc_killall_tasks(struct rpc_clnt *);
void rpc_execute(struct rpc_task *);
void rpc_init_priority_wait_queue(struct rpc_wait_queue *, const char *);
void rpc_init_wait_queue(struct rpc_wait_queue *, const char *);
void rpc_sleep_on(struct rpc_wait_queue *, struct rpc_task *,
rpc_action action, rpc_action timer);
void rpc_wake_up_task(struct rpc_task *);
void rpc_wake_up(struct rpc_wait_queue *);
struct rpc_task *rpc_wake_up_next(struct rpc_wait_queue *);
void rpc_wake_up_status(struct rpc_wait_queue *, int);
void rpc_delay(struct rpc_task *, unsigned long);
void * rpc_malloc(struct rpc_task *, size_t);
void rpc_free(struct rpc_task *);
int rpciod_up(void);
void rpciod_down(void);
int __rpc_wait_for_completion_task(struct rpc_task *task, int (*)(void *));
#ifdef RPC_DEBUG
void rpc_show_tasks(void);
#endif
int rpc_init_mempool(void);
void rpc_destroy_mempool(void);
extern struct workqueue_struct *rpciod_workqueue;
static inline void rpc_exit(struct rpc_task *task, int status)
{
task->tk_status = status;
task->tk_action = rpc_exit_task;
}
static inline int rpc_wait_for_completion_task(struct rpc_task *task)
{
return __rpc_wait_for_completion_task(task, NULL);
}
#ifdef RPC_DEBUG
static inline const char * rpc_qname(struct rpc_wait_queue *q)
{
return ((q && q->name) ? q->name : "unknown");
}
#endif
#endif /* _LINUX_SUNRPC_SCHED_H_ */

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/*
* linux/include/linux/sunrpc/stats.h
*
* Client statistics collection for SUN RPC
*
* Copyright (C) 1996 Olaf Kirch <okir@monad.swb.de>
*/
#ifndef _LINUX_SUNRPC_STATS_H
#define _LINUX_SUNRPC_STATS_H
#include <linux/proc_fs.h>
struct rpc_stat {
struct rpc_program * program;
unsigned int netcnt,
netudpcnt,
nettcpcnt,
nettcpconn,
netreconn;
unsigned int rpccnt,
rpcretrans,
rpcauthrefresh,
rpcgarbage;
};
struct svc_stat {
struct svc_program * program;
unsigned int netcnt,
netudpcnt,
nettcpcnt,
nettcpconn;
unsigned int rpccnt,
rpcbadfmt,
rpcbadauth,
rpcbadclnt;
};
void rpc_proc_init(void);
void rpc_proc_exit(void);
#ifdef MODULE
void rpc_modcount(struct inode *, int);
#endif
#ifdef CONFIG_PROC_FS
struct proc_dir_entry * rpc_proc_register(struct rpc_stat *);
void rpc_proc_unregister(const char *);
void rpc_proc_zero(struct rpc_program *);
struct proc_dir_entry * svc_proc_register(struct svc_stat *,
const struct file_operations *);
void svc_proc_unregister(const char *);
void svc_seq_show(struct seq_file *,
const struct svc_stat *);
extern struct proc_dir_entry *proc_net_rpc;
#else
static inline struct proc_dir_entry *rpc_proc_register(struct rpc_stat *s) { return NULL; }
static inline void rpc_proc_unregister(const char *p) {}
static inline void rpc_proc_zero(struct rpc_program *p) {}
static inline struct proc_dir_entry *svc_proc_register(struct svc_stat *s,
const struct file_operations *f) { return NULL; }
static inline void svc_proc_unregister(const char *p) {}
static inline void svc_seq_show(struct seq_file *seq,
const struct svc_stat *st) {}
#define proc_net_rpc NULL
#endif
#endif /* _LINUX_SUNRPC_STATS_H */

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/*
* linux/include/linux/sunrpc/svc.h
*
* RPC server declarations.
*
* Copyright (C) 1995, 1996 Olaf Kirch <okir@monad.swb.de>
*/
#ifndef SUNRPC_SVC_H
#define SUNRPC_SVC_H
#include <linux/in.h>
#include <linux/in6.h>
#include <linux/sunrpc/types.h>
#include <linux/sunrpc/xdr.h>
#include <linux/sunrpc/auth.h>
#include <linux/sunrpc/svcauth.h>
#include <linux/wait.h>
#include <linux/mm.h>
/*
* This is the RPC server thread function prototype
*/
typedef void (*svc_thread_fn)(struct svc_rqst *);
/*
*
* RPC service thread pool.
*
* Pool of threads and temporary sockets. Generally there is only
* a single one of these per RPC service, but on NUMA machines those
* services that can benefit from it (i.e. nfs but not lockd) will
* have one pool per NUMA node. This optimisation reduces cross-
* node traffic on multi-node NUMA NFS servers.
*/
struct svc_pool {
unsigned int sp_id; /* pool id; also node id on NUMA */
spinlock_t sp_lock; /* protects all fields */
struct list_head sp_threads; /* idle server threads */
struct list_head sp_sockets; /* pending sockets */
unsigned int sp_nrthreads; /* # of threads in pool */
struct list_head sp_all_threads; /* all server threads */
} ____cacheline_aligned_in_smp;
/*
* RPC service.
*
* An RPC service is a ``daemon,'' possibly multithreaded, which
* receives and processes incoming RPC messages.
* It has one or more transport sockets associated with it, and maintains
* a list of idle threads waiting for input.
*
* We currently do not support more than one RPC program per daemon.
*/
struct svc_serv {
struct svc_program * sv_program; /* RPC program */
struct svc_stat * sv_stats; /* RPC statistics */
spinlock_t sv_lock;
unsigned int sv_nrthreads; /* # of server threads */
unsigned int sv_max_payload; /* datagram payload size */
unsigned int sv_max_mesg; /* max_payload + 1 page for overheads */
unsigned int sv_xdrsize; /* XDR buffer size */
struct list_head sv_permsocks; /* all permanent sockets */
struct list_head sv_tempsocks; /* all temporary sockets */
int sv_tmpcnt; /* count of temporary sockets */
struct timer_list sv_temptimer; /* timer for aging temporary sockets */
char * sv_name; /* service name */
unsigned int sv_nrpools; /* number of thread pools */
struct svc_pool * sv_pools; /* array of thread pools */
void (*sv_shutdown)(struct svc_serv *serv);
/* Callback to use when last thread
* exits.
*/
struct module * sv_module; /* optional module to count when
* adding threads */
svc_thread_fn sv_function; /* main function for threads */
int sv_kill_signal; /* signal to kill threads */
};
/*
* We use sv_nrthreads as a reference count. svc_destroy() drops
* this refcount, so we need to bump it up around operations that
* change the number of threads. Horrible, but there it is.
* Should be called with the BKL held.
*/
static inline void svc_get(struct svc_serv *serv)
{
serv->sv_nrthreads++;
}
/*
* Maximum payload size supported by a kernel RPC server.
* This is use to determine the max number of pages nfsd is
* willing to return in a single READ operation.
*
* These happen to all be powers of 2, which is not strictly
* necessary but helps enforce the real limitation, which is
* that they should be multiples of PAGE_CACHE_SIZE.
*
* For UDP transports, a block plus NFS,RPC, and UDP headers
* has to fit into the IP datagram limit of 64K. The largest
* feasible number for all known page sizes is probably 48K,
* but we choose 32K here. This is the same as the historical
* Linux limit; someone who cares more about NFS/UDP performance
* can test a larger number.
*
* For TCP transports we have more freedom. A size of 1MB is
* chosen to match the client limit. Other OSes are known to
* have larger limits, but those numbers are probably beyond
* the point of diminishing returns.
*/
#define RPCSVC_MAXPAYLOAD (1*1024*1024u)
#define RPCSVC_MAXPAYLOAD_TCP RPCSVC_MAXPAYLOAD
#define RPCSVC_MAXPAYLOAD_UDP (32*1024u)
extern u32 svc_max_payload(const struct svc_rqst *rqstp);
/*
* RPC Requsts and replies are stored in one or more pages.
* We maintain an array of pages for each server thread.
* Requests are copied into these pages as they arrive. Remaining
* pages are available to write the reply into.
*
* Pages are sent using ->sendpage so each server thread needs to
* allocate more to replace those used in sending. To help keep track
* of these pages we have a receive list where all pages initialy live,
* and a send list where pages are moved to when there are to be part
* of a reply.
*
* We use xdr_buf for holding responses as it fits well with NFS
* read responses (that have a header, and some data pages, and possibly
* a tail) and means we can share some client side routines.
*
* The xdr_buf.head kvec always points to the first page in the rq_*pages
* list. The xdr_buf.pages pointer points to the second page on that
* list. xdr_buf.tail points to the end of the first page.
* This assumes that the non-page part of an rpc reply will fit
* in a page - NFSd ensures this. lockd also has no trouble.
*
* Each request/reply pair can have at most one "payload", plus two pages,
* one for the request, and one for the reply.
* We using ->sendfile to return read data, we might need one extra page
* if the request is not page-aligned. So add another '1'.
*/
#define RPCSVC_MAXPAGES ((RPCSVC_MAXPAYLOAD+PAGE_SIZE-1)/PAGE_SIZE \
+ 2 + 1)
static inline u32 svc_getnl(struct kvec *iov)
{
__be32 val, *vp;
vp = iov->iov_base;
val = *vp++;
iov->iov_base = (void*)vp;
iov->iov_len -= sizeof(__be32);
return ntohl(val);
}
static inline void svc_putnl(struct kvec *iov, u32 val)
{
__be32 *vp = iov->iov_base + iov->iov_len;
*vp = htonl(val);
iov->iov_len += sizeof(__be32);
}
static inline __be32 svc_getu32(struct kvec *iov)
{
__be32 val, *vp;
vp = iov->iov_base;
val = *vp++;
iov->iov_base = (void*)vp;
iov->iov_len -= sizeof(__be32);
return val;
}
static inline void svc_ungetu32(struct kvec *iov)
{
__be32 *vp = (__be32 *)iov->iov_base;
iov->iov_base = (void *)(vp - 1);
iov->iov_len += sizeof(*vp);
}
static inline void svc_putu32(struct kvec *iov, __be32 val)
{
__be32 *vp = iov->iov_base + iov->iov_len;
*vp = val;
iov->iov_len += sizeof(__be32);
}
union svc_addr_u {
struct in_addr addr;
struct in6_addr addr6;
};
/*
* The context of a single thread, including the request currently being
* processed.
*/
struct svc_rqst {
struct list_head rq_list; /* idle list */
struct list_head rq_all; /* all threads list */
struct svc_sock * rq_sock; /* socket */
struct sockaddr_storage rq_addr; /* peer address */
size_t rq_addrlen;
struct svc_serv * rq_server; /* RPC service definition */
struct svc_pool * rq_pool; /* thread pool */
struct svc_procedure * rq_procinfo; /* procedure info */
struct auth_ops * rq_authop; /* authentication flavour */
struct svc_cred rq_cred; /* auth info */
struct sk_buff * rq_skbuff; /* fast recv inet buffer */
struct svc_deferred_req*rq_deferred; /* deferred request we are replaying */
struct xdr_buf rq_arg;
struct xdr_buf rq_res;
struct page * rq_pages[RPCSVC_MAXPAGES];
struct page * *rq_respages; /* points into rq_pages */
int rq_resused; /* number of pages used for result */
struct kvec rq_vec[RPCSVC_MAXPAGES]; /* generally useful.. */
__be32 rq_xid; /* transmission id */
u32 rq_prog; /* program number */
u32 rq_vers; /* program version */
u32 rq_proc; /* procedure number */
u32 rq_prot; /* IP protocol */
unsigned short
rq_secure : 1; /* secure port */
union svc_addr_u rq_daddr; /* dest addr of request
* - reply from here */
void * rq_argp; /* decoded arguments */
void * rq_resp; /* xdr'd results */
void * rq_auth_data; /* flavor-specific data */
int rq_reserved; /* space on socket outq
* reserved for this request
*/
struct cache_req rq_chandle; /* handle passed to caches for
* request delaying
*/
/* Catering to nfsd */
struct auth_domain * rq_client; /* RPC peer info */
struct svc_cacherep * rq_cacherep; /* cache info */
struct knfsd_fh * rq_reffh; /* Referrence filehandle, used to
* determine what device number
* to report (real or virtual)
*/
int rq_sendfile_ok; /* turned off in gss privacy
* to prevent encrypting page
* cache pages */
wait_queue_head_t rq_wait; /* synchronization */
struct task_struct *rq_task; /* service thread */
};
/*
* Rigorous type checking on sockaddr type conversions
*/
static inline struct sockaddr_in *svc_addr_in(struct svc_rqst *rqst)
{
return (struct sockaddr_in *) &rqst->rq_addr;
}
static inline struct sockaddr_in6 *svc_addr_in6(struct svc_rqst *rqst)
{
return (struct sockaddr_in6 *) &rqst->rq_addr;
}
static inline struct sockaddr *svc_addr(struct svc_rqst *rqst)
{
return (struct sockaddr *) &rqst->rq_addr;
}
/*
* Check buffer bounds after decoding arguments
*/
static inline int
xdr_argsize_check(struct svc_rqst *rqstp, __be32 *p)
{
char *cp = (char *)p;
struct kvec *vec = &rqstp->rq_arg.head[0];
return cp >= (char*)vec->iov_base
&& cp <= (char*)vec->iov_base + vec->iov_len;
}
static inline int
xdr_ressize_check(struct svc_rqst *rqstp, __be32 *p)
{
struct kvec *vec = &rqstp->rq_res.head[0];
char *cp = (char*)p;
vec->iov_len = cp - (char*)vec->iov_base;
return vec->iov_len <= PAGE_SIZE;
}
static inline void svc_free_res_pages(struct svc_rqst *rqstp)
{
while (rqstp->rq_resused) {
struct page **pp = (rqstp->rq_respages +
--rqstp->rq_resused);
if (*pp) {
put_page(*pp);
*pp = NULL;
}
}
}
struct svc_deferred_req {
u32 prot; /* protocol (UDP or TCP) */
struct svc_sock *svsk;
struct sockaddr_storage addr; /* where reply must go */
size_t addrlen;
union svc_addr_u daddr; /* where reply must come from */
struct cache_deferred_req handle;
int argslen;
__be32 args[0];
};
/*
* List of RPC programs on the same transport endpoint
*/
struct svc_program {
struct svc_program * pg_next; /* other programs (same xprt) */
u32 pg_prog; /* program number */
unsigned int pg_lovers; /* lowest version */
unsigned int pg_hivers; /* lowest version */
unsigned int pg_nvers; /* number of versions */
struct svc_version ** pg_vers; /* version array */
char * pg_name; /* service name */
char * pg_class; /* class name: services sharing authentication */
struct svc_stat * pg_stats; /* rpc statistics */
int (*pg_authenticate)(struct svc_rqst *);
};
/*
* RPC program version
*/
struct svc_version {
u32 vs_vers; /* version number */
u32 vs_nproc; /* number of procedures */
struct svc_procedure * vs_proc; /* per-procedure info */
u32 vs_xdrsize; /* xdrsize needed for this version */
unsigned int vs_hidden : 1; /* Don't register with portmapper.
* Only used for nfsacl so far. */
/* Override dispatch function (e.g. when caching replies).
* A return value of 0 means drop the request.
* vs_dispatch == NULL means use default dispatcher.
*/
int (*vs_dispatch)(struct svc_rqst *, __be32 *);
};
/*
* RPC procedure info
*/
typedef __be32 (*svc_procfunc)(struct svc_rqst *, void *argp, void *resp);
struct svc_procedure {
svc_procfunc pc_func; /* process the request */
kxdrproc_t pc_decode; /* XDR decode args */
kxdrproc_t pc_encode; /* XDR encode result */
kxdrproc_t pc_release; /* XDR free result */
unsigned int pc_argsize; /* argument struct size */
unsigned int pc_ressize; /* result struct size */
unsigned int pc_count; /* call count */
unsigned int pc_cachetype; /* cache info (NFS) */
unsigned int pc_xdrressize; /* maximum size of XDR reply */
};
/*
* Function prototypes.
*/
struct svc_serv * svc_create(struct svc_program *, unsigned int,
void (*shutdown)(struct svc_serv*));
int svc_create_thread(svc_thread_fn, struct svc_serv *);
void svc_exit_thread(struct svc_rqst *);
struct svc_serv * svc_create_pooled(struct svc_program *, unsigned int,
void (*shutdown)(struct svc_serv*),
svc_thread_fn, int sig, struct module *);
int svc_set_num_threads(struct svc_serv *, struct svc_pool *, int);
void svc_destroy(struct svc_serv *);
int svc_process(struct svc_rqst *);
int svc_register(struct svc_serv *, int, unsigned short);
void svc_wake_up(struct svc_serv *);
void svc_reserve(struct svc_rqst *rqstp, int space);
struct svc_pool * svc_pool_for_cpu(struct svc_serv *serv, int cpu);
char * svc_print_addr(struct svc_rqst *, char *, size_t);
#define RPC_MAX_ADDRBUFLEN (63U)
#endif /* SUNRPC_SVC_H */

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/*
* linux/include/linux/sunrpc/svcauth.h
*
* RPC server-side authentication stuff.
*
* Copyright (C) 1995, 1996 Olaf Kirch <okir@monad.swb.de>
*/
#ifndef _LINUX_SUNRPC_SVCAUTH_H_
#define _LINUX_SUNRPC_SVCAUTH_H_
#ifdef __KERNEL__
#include <linux/string.h>
#include <linux/sunrpc/msg_prot.h>
#include <linux/sunrpc/cache.h>
#include <linux/hash.h>
#define SVC_CRED_NGROUPS 32
struct svc_cred {
uid_t cr_uid;
gid_t cr_gid;
struct group_info *cr_group_info;
};
struct svc_rqst; /* forward decl */
/* Authentication is done in the context of a domain.
*
* Currently, the nfs server uses the auth_domain to stand
* for the "client" listed in /etc/exports.
*
* More generally, a domain might represent a group of clients using
* a common mechanism for authentication and having a common mapping
* between local identity (uid) and network identity. All clients
* in a domain have similar general access rights. Each domain can
* contain multiple principals which will have different specific right
* based on normal Discretionary Access Control.
*
* A domain is created by an authentication flavour module based on name
* only. Userspace then fills in detail on demand.
*
* In the case of auth_unix and auth_null, the auth_domain is also
* associated with entries in another cache representing the mapping
* of ip addresses to the given client.
*/
struct auth_domain {
struct kref ref;
struct hlist_node hash;
char *name;
struct auth_ops *flavour;
};
/*
* Each authentication flavour registers an auth_ops
* structure.
* name is simply the name.
* flavour gives the auth flavour. It determines where the flavour is registered
* accept() is given a request and should verify it.
* It should inspect the authenticator and verifier, and possibly the data.
* If there is a problem with the authentication *authp should be set.
* The return value of accept() can indicate:
* OK - authorised. client and credential are set in rqstp.
* reqbuf points to arguments
* resbuf points to good place for results. verfier
* is (probably) already in place. Certainly space is
* reserved for it.
* DROP - simply drop the request. It may have been deferred
* GARBAGE - rpc garbage_args error
* SYSERR - rpc system_err error
* DENIED - authp holds reason for denial.
* COMPLETE - the reply is encoded already and ready to be sent; no
* further processing is necessary. (This is used for processing
* null procedure calls which are used to set up encryption
* contexts.)
*
* accept is passed the proc number so that it can accept NULL rpc requests
* even if it cannot authenticate the client (as is sometimes appropriate).
*
* release() is given a request after the procedure has been run.
* It should sign/encrypt the results if needed
* It should return:
* OK - the resbuf is ready to be sent
* DROP - the reply should be quitely dropped
* DENIED - authp holds a reason for MSG_DENIED
* SYSERR - rpc system_err
*
* domain_release()
* This call releases a domain.
* set_client()
* Givens a pending request (struct svc_rqst), finds and assigns
* an appropriate 'auth_domain' as the client.
*/
struct auth_ops {
char * name;
struct module *owner;
int flavour;
int (*accept)(struct svc_rqst *rq, __be32 *authp);
int (*release)(struct svc_rqst *rq);
void (*domain_release)(struct auth_domain *);
int (*set_client)(struct svc_rqst *rq);
};
#define SVC_GARBAGE 1
#define SVC_SYSERR 2
#define SVC_VALID 3
#define SVC_NEGATIVE 4
#define SVC_OK 5
#define SVC_DROP 6
#define SVC_DENIED 7
#define SVC_PENDING 8
#define SVC_COMPLETE 9
extern int svc_authenticate(struct svc_rqst *rqstp, __be32 *authp);
extern int svc_authorise(struct svc_rqst *rqstp);
extern int svc_set_client(struct svc_rqst *rqstp);
extern int svc_auth_register(rpc_authflavor_t flavor, struct auth_ops *aops);
extern void svc_auth_unregister(rpc_authflavor_t flavor);
extern struct auth_domain *unix_domain_find(char *name);
extern void auth_domain_put(struct auth_domain *item);
extern int auth_unix_add_addr(struct in_addr addr, struct auth_domain *dom);
extern struct auth_domain *auth_domain_lookup(char *name, struct auth_domain *new);
extern struct auth_domain *auth_domain_find(char *name);
extern struct auth_domain *auth_unix_lookup(struct in_addr addr);
extern int auth_unix_forget_old(struct auth_domain *dom);
extern void svcauth_unix_purge(void);
extern void svcauth_unix_info_release(void *);
static inline unsigned long hash_str(char *name, int bits)
{
unsigned long hash = 0;
unsigned long l = 0;
int len = 0;
unsigned char c;
do {
if (unlikely(!(c = *name++))) {
c = (char)len; len = -1;
}
l = (l << 8) | c;
len++;
if ((len & (BITS_PER_LONG/8-1))==0)
hash = hash_long(hash^l, BITS_PER_LONG);
} while (len);
return hash >> (BITS_PER_LONG - bits);
}
static inline unsigned long hash_mem(char *buf, int length, int bits)
{
unsigned long hash = 0;
unsigned long l = 0;
int len = 0;
unsigned char c;
do {
if (len == length) {
c = (char)len; len = -1;
} else
c = *buf++;
l = (l << 8) | c;
len++;
if ((len & (BITS_PER_LONG/8-1))==0)
hash = hash_long(hash^l, BITS_PER_LONG);
} while (len);
return hash >> (BITS_PER_LONG - bits);
}
#endif /* __KERNEL__ */
#endif /* _LINUX_SUNRPC_SVCAUTH_H_ */

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/*
* linux/include/linux/sunrpc/svcauth_gss.h
*
* Bruce Fields <bfields@umich.edu>
* Copyright (c) 2002 The Regents of the Unviersity of Michigan
*
* $Id: svcauth_gss.h,v 1.1.1.1 2007/06/12 07:27:16 eyryu Exp $
*
*/
#ifndef _LINUX_SUNRPC_SVCAUTH_GSS_H
#define _LINUX_SUNRPC_SVCAUTH_GSS_H
#ifdef __KERNEL__
#include <linux/sched.h>
#include <linux/sunrpc/types.h>
#include <linux/sunrpc/xdr.h>
#include <linux/sunrpc/svcauth.h>
#include <linux/sunrpc/svcsock.h>
#include <linux/sunrpc/auth_gss.h>
int gss_svc_init(void);
void gss_svc_shutdown(void);
int svcauth_gss_register_pseudoflavor(u32 pseudoflavor, char * name);
#endif /* __KERNEL__ */
#endif /* _LINUX_SUNRPC_SVCAUTH_GSS_H */

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/*
* linux/include/linux/sunrpc/svcsock.h
*
* RPC server socket I/O.
*
* Copyright (C) 1995, 1996 Olaf Kirch <okir@monad.swb.de>
*/
#ifndef SUNRPC_SVCSOCK_H
#define SUNRPC_SVCSOCK_H
#include <linux/sunrpc/svc.h>
/*
* RPC server socket.
*/
struct svc_sock {
struct list_head sk_ready; /* list of ready sockets */
struct list_head sk_list; /* list of all sockets */
struct socket * sk_sock; /* berkeley socket layer */
struct sock * sk_sk; /* INET layer */
struct svc_pool * sk_pool; /* current pool iff queued */
struct svc_serv * sk_server; /* service for this socket */
atomic_t sk_inuse; /* use count */
unsigned long sk_flags;
#define SK_BUSY 0 /* enqueued/receiving */
#define SK_CONN 1 /* conn pending */
#define SK_CLOSE 2 /* dead or dying */
#define SK_DATA 3 /* data pending */
#define SK_TEMP 4 /* temp (TCP) socket */
#define SK_DEAD 6 /* socket closed */
#define SK_CHNGBUF 7 /* need to change snd/rcv buffer sizes */
#define SK_DEFERRED 8 /* request on sk_deferred */
#define SK_OLD 9 /* used for temp socket aging mark+sweep */
#define SK_DETACHED 10 /* detached from tempsocks list */
atomic_t sk_reserved; /* space on outq that is reserved */
spinlock_t sk_defer_lock; /* protects sk_deferred */
struct list_head sk_deferred; /* deferred requests that need to
* be revisted */
struct mutex sk_mutex; /* to serialize sending data */
int (*sk_recvfrom)(struct svc_rqst *rqstp);
int (*sk_sendto)(struct svc_rqst *rqstp);
/* We keep the old state_change and data_ready CB's here */
void (*sk_ostate)(struct sock *);
void (*sk_odata)(struct sock *, int bytes);
void (*sk_owspace)(struct sock *);
/* private TCP part */
int sk_reclen; /* length of record */
int sk_tcplen; /* current read length */
time_t sk_lastrecv; /* time of last received request */
/* cache of various info for TCP sockets */
void *sk_info_authunix;
struct sockaddr_storage sk_remote; /* remote peer's address */
int sk_remotelen; /* length of address */
};
/*
* Function prototypes.
*/
int svc_makesock(struct svc_serv *, int, unsigned short, int flags);
void svc_force_close_socket(struct svc_sock *);
int svc_recv(struct svc_rqst *, long);
int svc_send(struct svc_rqst *);
void svc_drop(struct svc_rqst *);
void svc_sock_update_bufs(struct svc_serv *serv);
int svc_sock_names(char *buf, struct svc_serv *serv, char *toclose);
int svc_addsock(struct svc_serv *serv,
int fd,
char *name_return,
int *proto);
/*
* svc_makesock socket characteristics
*/
#define SVC_SOCK_DEFAULTS (0U)
#define SVC_SOCK_ANONYMOUS (1U << 0) /* don't register with pmap */
#define SVC_SOCK_TEMPORARY (1U << 1) /* flag socket as temporary */
#endif /* SUNRPC_SVCSOCK_H */

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include/linux/sunrpc/timer.h Normal file
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/*
* linux/include/linux/sunrpc/timer.h
*
* Declarations for the RPC transport timer.
*
* Copyright (C) 2002 Trond Myklebust <trond.myklebust@fys.uio.no>
*/
#ifndef _LINUX_SUNRPC_TIMER_H
#define _LINUX_SUNRPC_TIMER_H
#include <asm/atomic.h>
struct rpc_rtt {
unsigned long timeo; /* default timeout value */
unsigned long srtt[5]; /* smoothed round trip time << 3 */
unsigned long sdrtt[5]; /* smoothed medium deviation of RTT */
int ntimeouts[5]; /* Number of timeouts for the last request */
};
extern void rpc_init_rtt(struct rpc_rtt *rt, unsigned long timeo);
extern void rpc_update_rtt(struct rpc_rtt *rt, unsigned timer, long m);
extern unsigned long rpc_calc_rto(struct rpc_rtt *rt, unsigned timer);
static inline void rpc_set_timeo(struct rpc_rtt *rt, int timer, int ntimeo)
{
int *t;
if (!timer)
return;
t = &rt->ntimeouts[timer-1];
if (ntimeo < *t) {
if (*t > 0)
(*t)--;
} else {
if (ntimeo > 8)
ntimeo = 8;
*t = ntimeo;
}
}
static inline int rpc_ntimeo(struct rpc_rtt *rt, int timer)
{
if (!timer)
return 0;
return rt->ntimeouts[timer-1];
}
#endif /* _LINUX_SUNRPC_TIMER_H */

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include/linux/sunrpc/types.h Normal file
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/*
* linux/include/linux/sunrpc/types.h
*
* Generic types and misc stuff for RPC.
*
* Copyright (C) 1996, Olaf Kirch <okir@monad.swb.de>
*/
#ifndef _LINUX_SUNRPC_TYPES_H_
#define _LINUX_SUNRPC_TYPES_H_
#include <linux/timer.h>
#include <linux/workqueue.h>
#include <linux/sunrpc/debug.h>
#include <linux/list.h>
/*
* Shorthands
*/
#define signalled() (signal_pending(current))
#endif /* _LINUX_SUNRPC_TYPES_H_ */

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/*
* include/linux/sunrpc/xdr.h
*
* Copyright (C) 1995-1997 Olaf Kirch <okir@monad.swb.de>
*/
#ifndef _SUNRPC_XDR_H_
#define _SUNRPC_XDR_H_
#ifdef __KERNEL__
#include <linux/uio.h>
#include <asm/byteorder.h>
#include <linux/scatterlist.h>
/*
* Buffer adjustment
*/
#define XDR_QUADLEN(l) (((l) + 3) >> 2)
/*
* Generic opaque `network object.' At the kernel level, this type
* is used only by lockd.
*/
#define XDR_MAX_NETOBJ 1024
struct xdr_netobj {
unsigned int len;
u8 * data;
};
/*
* This is the generic XDR function. rqstp is either a rpc_rqst (client
* side) or svc_rqst pointer (server side).
* Encode functions always assume there's enough room in the buffer.
*/
typedef int (*kxdrproc_t)(void *rqstp, __be32 *data, void *obj);
/*
* Basic structure for transmission/reception of a client XDR message.
* Features a header (for a linear buffer containing RPC headers
* and the data payload for short messages), and then an array of
* pages.
* The tail iovec allows you to append data after the page array. Its
* main interest is for appending padding to the pages in order to
* satisfy the int_32-alignment requirements in RFC1832.
*
* For the future, we might want to string several of these together
* in a list if anybody wants to make use of NFSv4 COMPOUND
* operations and/or has a need for scatter/gather involving pages.
*/
struct xdr_buf {
struct kvec head[1], /* RPC header + non-page data */
tail[1]; /* Appended after page data */
struct page ** pages; /* Array of contiguous pages */
unsigned int page_base, /* Start of page data */
page_len; /* Length of page data */
unsigned int buflen, /* Total length of storage buffer */
len; /* Length of XDR encoded message */
};
/*
* pre-xdr'ed macros.
*/
#define xdr_zero __constant_htonl(0)
#define xdr_one __constant_htonl(1)
#define xdr_two __constant_htonl(2)
#define rpc_success __constant_htonl(RPC_SUCCESS)
#define rpc_prog_unavail __constant_htonl(RPC_PROG_UNAVAIL)
#define rpc_prog_mismatch __constant_htonl(RPC_PROG_MISMATCH)
#define rpc_proc_unavail __constant_htonl(RPC_PROC_UNAVAIL)
#define rpc_garbage_args __constant_htonl(RPC_GARBAGE_ARGS)
#define rpc_system_err __constant_htonl(RPC_SYSTEM_ERR)
#define rpc_drop_reply __constant_htonl(RPC_DROP_REPLY)
#define rpc_auth_ok __constant_htonl(RPC_AUTH_OK)
#define rpc_autherr_badcred __constant_htonl(RPC_AUTH_BADCRED)
#define rpc_autherr_rejectedcred __constant_htonl(RPC_AUTH_REJECTEDCRED)
#define rpc_autherr_badverf __constant_htonl(RPC_AUTH_BADVERF)
#define rpc_autherr_rejectedverf __constant_htonl(RPC_AUTH_REJECTEDVERF)
#define rpc_autherr_tooweak __constant_htonl(RPC_AUTH_TOOWEAK)
#define rpcsec_gsserr_credproblem __constant_htonl(RPCSEC_GSS_CREDPROBLEM)
#define rpcsec_gsserr_ctxproblem __constant_htonl(RPCSEC_GSS_CTXPROBLEM)
#define rpc_autherr_oldseqnum __constant_htonl(101)
/*
* Miscellaneous XDR helper functions
*/
__be32 *xdr_encode_opaque_fixed(__be32 *p, const void *ptr, unsigned int len);
__be32 *xdr_encode_opaque(__be32 *p, const void *ptr, unsigned int len);
__be32 *xdr_encode_string(__be32 *p, const char *s);
__be32 *xdr_decode_string_inplace(__be32 *p, char **sp, int *lenp, int maxlen);
__be32 *xdr_encode_netobj(__be32 *p, const struct xdr_netobj *);
__be32 *xdr_decode_netobj(__be32 *p, struct xdr_netobj *);
void xdr_encode_pages(struct xdr_buf *, struct page **, unsigned int,
unsigned int);
void xdr_inline_pages(struct xdr_buf *, unsigned int,
struct page **, unsigned int, unsigned int);
static inline __be32 *xdr_encode_array(__be32 *p, const void *s, unsigned int len)
{
return xdr_encode_opaque(p, s, len);
}
/*
* Decode 64bit quantities (NFSv3 support)
*/
static inline __be32 *
xdr_encode_hyper(__be32 *p, __u64 val)
{
*p++ = htonl(val >> 32);
*p++ = htonl(val & 0xFFFFFFFF);
return p;
}
static inline __be32 *
xdr_decode_hyper(__be32 *p, __u64 *valp)
{
*valp = ((__u64) ntohl(*p++)) << 32;
*valp |= ntohl(*p++);
return p;
}
/*
* Adjust kvec to reflect end of xdr'ed data (RPC client XDR)
*/
static inline int
xdr_adjust_iovec(struct kvec *iov, __be32 *p)
{
return iov->iov_len = ((u8 *) p - (u8 *) iov->iov_base);
}
/*
* XDR buffer helper functions
*/
extern void xdr_shift_buf(struct xdr_buf *, size_t);
extern void xdr_buf_from_iov(struct kvec *, struct xdr_buf *);
extern int xdr_buf_subsegment(struct xdr_buf *, struct xdr_buf *, unsigned int, unsigned int);
extern int xdr_buf_read_netobj(struct xdr_buf *, struct xdr_netobj *, unsigned int);
extern int read_bytes_from_xdr_buf(struct xdr_buf *, unsigned int, void *, unsigned int);
extern int write_bytes_to_xdr_buf(struct xdr_buf *, unsigned int, void *, unsigned int);
/*
* Helper structure for copying from an sk_buff.
*/
struct xdr_skb_reader {
struct sk_buff *skb;
unsigned int offset;
size_t count;
__wsum csum;
};
typedef size_t (*xdr_skb_read_actor)(struct xdr_skb_reader *desc, void *to, size_t len);
size_t xdr_skb_read_bits(struct xdr_skb_reader *desc, void *to, size_t len);
extern int csum_partial_copy_to_xdr(struct xdr_buf *, struct sk_buff *);
extern ssize_t xdr_partial_copy_from_skb(struct xdr_buf *, unsigned int,
struct xdr_skb_reader *, xdr_skb_read_actor);
extern int xdr_encode_word(struct xdr_buf *, unsigned int, u32);
extern int xdr_decode_word(struct xdr_buf *, unsigned int, u32 *);
struct xdr_array2_desc;
typedef int (*xdr_xcode_elem_t)(struct xdr_array2_desc *desc, void *elem);
struct xdr_array2_desc {
unsigned int elem_size;
unsigned int array_len;
unsigned int array_maxlen;
xdr_xcode_elem_t xcode;
};
extern int xdr_decode_array2(struct xdr_buf *buf, unsigned int base,
struct xdr_array2_desc *desc);
extern int xdr_encode_array2(struct xdr_buf *buf, unsigned int base,
struct xdr_array2_desc *desc);
/*
* Provide some simple tools for XDR buffer overflow-checking etc.
*/
struct xdr_stream {
__be32 *p; /* start of available buffer */
struct xdr_buf *buf; /* XDR buffer to read/write */
__be32 *end; /* end of available buffer space */
struct kvec *iov; /* pointer to the current kvec */
};
extern void xdr_init_encode(struct xdr_stream *xdr, struct xdr_buf *buf, __be32 *p);
extern __be32 *xdr_reserve_space(struct xdr_stream *xdr, size_t nbytes);
extern void xdr_write_pages(struct xdr_stream *xdr, struct page **pages,
unsigned int base, unsigned int len);
extern void xdr_init_decode(struct xdr_stream *xdr, struct xdr_buf *buf, __be32 *p);
extern __be32 *xdr_inline_decode(struct xdr_stream *xdr, size_t nbytes);
extern void xdr_read_pages(struct xdr_stream *xdr, unsigned int len);
extern void xdr_enter_page(struct xdr_stream *xdr, unsigned int len);
extern int xdr_process_buf(struct xdr_buf *buf, unsigned int offset, unsigned int len, int (*actor)(struct scatterlist *, void *), void *data);
#endif /* __KERNEL__ */
#endif /* _SUNRPC_XDR_H_ */

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include/linux/sunrpc/xprt.h Normal file
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/*
* linux/include/linux/sunrpc/xprt.h
*
* Declarations for the RPC transport interface.
*
* Copyright (C) 1995, 1996 Olaf Kirch <okir@monad.swb.de>
*/
#ifndef _LINUX_SUNRPC_XPRT_H
#define _LINUX_SUNRPC_XPRT_H
#include <linux/uio.h>
#include <linux/socket.h>
#include <linux/in.h>
#include <linux/kref.h>
#include <linux/sunrpc/sched.h>
#include <linux/sunrpc/xdr.h>
#include <linux/sunrpc/msg_prot.h>
extern unsigned int xprt_udp_slot_table_entries;
extern unsigned int xprt_tcp_slot_table_entries;
#define RPC_MIN_SLOT_TABLE (2U)
#define RPC_DEF_SLOT_TABLE (16U)
#define RPC_MAX_SLOT_TABLE (128U)
/*
* Parameters for choosing a free port
*/
extern unsigned int xprt_min_resvport;
extern unsigned int xprt_max_resvport;
#define RPC_MIN_RESVPORT (1U)
#define RPC_MAX_RESVPORT (65535U)
#define RPC_DEF_MIN_RESVPORT (665U)
#define RPC_DEF_MAX_RESVPORT (1023U)
/*
* This describes a timeout strategy
*/
struct rpc_timeout {
unsigned long to_initval, /* initial timeout */
to_maxval, /* max timeout */
to_increment; /* if !exponential */
unsigned int to_retries; /* max # of retries */
unsigned char to_exponential;
};
enum rpc_display_format_t {
RPC_DISPLAY_ADDR = 0,
RPC_DISPLAY_PORT,
RPC_DISPLAY_PROTO,
RPC_DISPLAY_ALL,
RPC_DISPLAY_MAX,
};
struct rpc_task;
struct rpc_xprt;
struct seq_file;
/*
* This describes a complete RPC request
*/
struct rpc_rqst {
/*
* This is the user-visible part
*/
struct rpc_xprt * rq_xprt; /* RPC client */
struct xdr_buf rq_snd_buf; /* send buffer */
struct xdr_buf rq_rcv_buf; /* recv buffer */
/*
* This is the private part
*/
struct rpc_task * rq_task; /* RPC task data */
__be32 rq_xid; /* request XID */
int rq_cong; /* has incremented xprt->cong */
int rq_received; /* receive completed */
u32 rq_seqno; /* gss seq no. used on req. */
int rq_enc_pages_num;
struct page **rq_enc_pages; /* scratch pages for use by
gss privacy code */
void (*rq_release_snd_buf)(struct rpc_rqst *); /* release rq_enc_pages */
struct list_head rq_list;
__u32 * rq_buffer; /* XDR encode buffer */
size_t rq_bufsize;
struct xdr_buf rq_private_buf; /* The receive buffer
* used in the softirq.
*/
unsigned long rq_majortimeo; /* major timeout alarm */
unsigned long rq_timeout; /* Current timeout value */
unsigned int rq_retries; /* # of retries */
/*
* Partial send handling
*/
u32 rq_bytes_sent; /* Bytes we have sent */
unsigned long rq_xtime; /* when transmitted */
int rq_ntrans;
};
#define rq_svec rq_snd_buf.head
#define rq_slen rq_snd_buf.len
struct rpc_xprt_ops {
void (*set_buffer_size)(struct rpc_xprt *xprt, size_t sndsize, size_t rcvsize);
int (*reserve_xprt)(struct rpc_task *task);
void (*release_xprt)(struct rpc_xprt *xprt, struct rpc_task *task);
void (*rpcbind)(struct rpc_task *task);
void (*set_port)(struct rpc_xprt *xprt, unsigned short port);
void (*connect)(struct rpc_task *task);
void * (*buf_alloc)(struct rpc_task *task, size_t size);
void (*buf_free)(struct rpc_task *task);
int (*send_request)(struct rpc_task *task);
void (*set_retrans_timeout)(struct rpc_task *task);
void (*timer)(struct rpc_task *task);
void (*release_request)(struct rpc_task *task);
void (*close)(struct rpc_xprt *xprt);
void (*destroy)(struct rpc_xprt *xprt);
void (*print_stats)(struct rpc_xprt *xprt, struct seq_file *seq);
};
struct rpc_xprt {
struct kref kref; /* Reference count */
struct rpc_xprt_ops * ops; /* transport methods */
struct rpc_timeout timeout; /* timeout parms */
struct sockaddr_storage addr; /* server address */
size_t addrlen; /* size of server address */
int prot; /* IP protocol */
unsigned long cong; /* current congestion */
unsigned long cwnd; /* congestion window */
size_t max_payload; /* largest RPC payload size,
in bytes */
unsigned int tsh_size; /* size of transport specific
header */
struct rpc_wait_queue binding; /* requests waiting on rpcbind */
struct rpc_wait_queue sending; /* requests waiting to send */
struct rpc_wait_queue resend; /* requests waiting to resend */
struct rpc_wait_queue pending; /* requests in flight */
struct rpc_wait_queue backlog; /* waiting for slot */
struct list_head free; /* free slots */
struct rpc_rqst * slot; /* slot table storage */
unsigned int max_reqs; /* total slots */
unsigned long state; /* transport state */
unsigned char shutdown : 1, /* being shut down */
resvport : 1; /* use a reserved port */
/*
* Connection of transports
*/
unsigned long connect_timeout,
bind_timeout,
reestablish_timeout;
/*
* Disconnection of idle transports
*/
struct work_struct task_cleanup;
struct timer_list timer;
unsigned long last_used,
idle_timeout;
/*
* Send stuff
*/
spinlock_t transport_lock; /* lock transport info */
spinlock_t reserve_lock; /* lock slot table */
u32 xid; /* Next XID value to use */
struct rpc_task * snd_task; /* Task blocked in send */
struct list_head recv;
struct {
unsigned long bind_count, /* total number of binds */
connect_count, /* total number of connects */
connect_start, /* connect start timestamp */
connect_time, /* jiffies waiting for connect */
sends, /* how many complete requests */
recvs, /* how many complete requests */
bad_xids; /* lookup_rqst didn't find XID */
unsigned long long req_u, /* average requests on the wire */
bklog_u; /* backlog queue utilization */
} stat;
char * address_strings[RPC_DISPLAY_MAX];
};
#ifdef __KERNEL__
/*
* Transport operations used by ULPs
*/
void xprt_set_timeout(struct rpc_timeout *to, unsigned int retr, unsigned long incr);
/*
* Generic internal transport functions
*/
struct rpc_xprt * xprt_create_transport(int proto, struct sockaddr *addr, size_t size, struct rpc_timeout *toparms);
void xprt_connect(struct rpc_task *task);
void xprt_reserve(struct rpc_task *task);
int xprt_reserve_xprt(struct rpc_task *task);
int xprt_reserve_xprt_cong(struct rpc_task *task);
int xprt_prepare_transmit(struct rpc_task *task);
void xprt_transmit(struct rpc_task *task);
void xprt_end_transmit(struct rpc_task *task);
int xprt_adjust_timeout(struct rpc_rqst *req);
void xprt_release_xprt(struct rpc_xprt *xprt, struct rpc_task *task);
void xprt_release_xprt_cong(struct rpc_xprt *xprt, struct rpc_task *task);
void xprt_release(struct rpc_task *task);
struct rpc_xprt * xprt_get(struct rpc_xprt *xprt);
void xprt_put(struct rpc_xprt *xprt);
static inline __be32 *xprt_skip_transport_header(struct rpc_xprt *xprt, __be32 *p)
{
return p + xprt->tsh_size;
}
/*
* Transport switch helper functions
*/
void xprt_set_retrans_timeout_def(struct rpc_task *task);
void xprt_set_retrans_timeout_rtt(struct rpc_task *task);
void xprt_wake_pending_tasks(struct rpc_xprt *xprt, int status);
void xprt_wait_for_buffer_space(struct rpc_task *task);
void xprt_write_space(struct rpc_xprt *xprt);
void xprt_update_rtt(struct rpc_task *task);
void xprt_adjust_cwnd(struct rpc_task *task, int result);
struct rpc_rqst * xprt_lookup_rqst(struct rpc_xprt *xprt, __be32 xid);
void xprt_complete_rqst(struct rpc_task *task, int copied);
void xprt_release_rqst_cong(struct rpc_task *task);
void xprt_disconnect(struct rpc_xprt *xprt);
/*
* Socket transport setup operations
*/
struct rpc_xprt * xs_setup_udp(struct sockaddr *addr, size_t addrlen, struct rpc_timeout *to);
struct rpc_xprt * xs_setup_tcp(struct sockaddr *addr, size_t addrlen, struct rpc_timeout *to);
/*
* Reserved bit positions in xprt->state
*/
#define XPRT_LOCKED (0)
#define XPRT_CONNECTED (1)
#define XPRT_CONNECTING (2)
#define XPRT_CLOSE_WAIT (3)
#define XPRT_BOUND (4)
#define XPRT_BINDING (5)
static inline void xprt_set_connected(struct rpc_xprt *xprt)
{
set_bit(XPRT_CONNECTED, &xprt->state);
}
static inline void xprt_clear_connected(struct rpc_xprt *xprt)
{
clear_bit(XPRT_CONNECTED, &xprt->state);
}
static inline int xprt_connected(struct rpc_xprt *xprt)
{
return test_bit(XPRT_CONNECTED, &xprt->state);
}
static inline int xprt_test_and_set_connected(struct rpc_xprt *xprt)
{
return test_and_set_bit(XPRT_CONNECTED, &xprt->state);
}
static inline int xprt_test_and_clear_connected(struct rpc_xprt *xprt)
{
return test_and_clear_bit(XPRT_CONNECTED, &xprt->state);
}
static inline void xprt_clear_connecting(struct rpc_xprt *xprt)
{
smp_mb__before_clear_bit();
clear_bit(XPRT_CONNECTING, &xprt->state);
smp_mb__after_clear_bit();
}
static inline int xprt_connecting(struct rpc_xprt *xprt)
{
return test_bit(XPRT_CONNECTING, &xprt->state);
}
static inline int xprt_test_and_set_connecting(struct rpc_xprt *xprt)
{
return test_and_set_bit(XPRT_CONNECTING, &xprt->state);
}
static inline void xprt_set_bound(struct rpc_xprt *xprt)
{
test_and_set_bit(XPRT_BOUND, &xprt->state);
}
static inline int xprt_bound(struct rpc_xprt *xprt)
{
return test_bit(XPRT_BOUND, &xprt->state);
}
static inline void xprt_clear_bound(struct rpc_xprt *xprt)
{
clear_bit(XPRT_BOUND, &xprt->state);
}
static inline void xprt_clear_binding(struct rpc_xprt *xprt)
{
smp_mb__before_clear_bit();
clear_bit(XPRT_BINDING, &xprt->state);
smp_mb__after_clear_bit();
}
static inline int xprt_test_and_set_binding(struct rpc_xprt *xprt)
{
return test_and_set_bit(XPRT_BINDING, &xprt->state);
}
#endif /* __KERNEL__*/
#endif /* _LINUX_SUNRPC_XPRT_H */