72579ac9cd
* Add includes that are directly used by headers * Remove includes that are not needed These are the changes made: [xdr.h] struct nfsd_readdirres has an embedded struct readdir_cd from nfsd.h fixing that we can drop other includes [xdr4.h] embedded types defined both at state.h and nfsd.h [syscall.h] After export.h fix none of these stuff is needed. fix extra space in # include <> statement [stats.h] does not need <linux/nfs4.h> but was export to user-mode so I don't touch it [state.h] embedded types from nfsfh.h like struct knfsd_fh. bringing that eliminates the need for all other includes [nfsfh.h] directly manipulating types from sunrpc/svc.h. Removed Other unused headers. [nfsd.h] removed unused headers include [export.h] lots of sunrpc/svc.h types and a single prototype declaration with pointer from nfsfh.h, but all users of export.h do need nfsfh.h any way. remove now un-needed include. [const.h] Unfixed (not independent) [cache.h] could do with a forward declaration of "struct svc_rqst;" from sunrpc/svc.h but all users absolutely will need sunrpc/svc.h it is easier overall this way. Signed-off-by: Boaz Harrosh <bharrosh@panasas.com> Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
85 lines
1.6 KiB
C
85 lines
1.6 KiB
C
/*
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* include/linux/nfsd/cache.h
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*
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* Request reply cache. This was heavily inspired by the
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* implementation in 4.3BSD/4.4BSD.
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*
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* Copyright (C) 1995, 1996 Olaf Kirch <okir@monad.swb.de>
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*/
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#ifndef NFSCACHE_H
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#define NFSCACHE_H
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#include <linux/sunrpc/svc.h>
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/*
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* Representation of a reply cache entry.
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*/
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struct svc_cacherep {
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struct hlist_node c_hash;
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struct list_head c_lru;
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unsigned char c_state, /* unused, inprog, done */
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c_type, /* status, buffer */
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c_secure : 1; /* req came from port < 1024 */
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struct sockaddr_in c_addr;
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__be32 c_xid;
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u32 c_prot;
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u32 c_proc;
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u32 c_vers;
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unsigned long c_timestamp;
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union {
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struct kvec u_vec;
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__be32 u_status;
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} c_u;
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};
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#define c_replvec c_u.u_vec
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#define c_replstat c_u.u_status
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/* cache entry states */
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enum {
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RC_UNUSED,
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RC_INPROG,
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RC_DONE
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};
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/* return values */
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enum {
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RC_DROPIT,
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RC_REPLY,
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RC_DOIT,
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RC_INTR
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};
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/*
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* Cache types.
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* We may want to add more types one day, e.g. for diropres and
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* attrstat replies. Using cache entries with fixed length instead
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* of buffer pointers may be more efficient.
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*/
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enum {
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RC_NOCACHE,
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RC_REPLSTAT,
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RC_REPLBUFF,
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};
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/*
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* If requests are retransmitted within this interval, they're dropped.
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*/
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#define RC_DELAY (HZ/5)
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int nfsd_reply_cache_init(void);
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void nfsd_reply_cache_shutdown(void);
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int nfsd_cache_lookup(struct svc_rqst *, int);
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void nfsd_cache_update(struct svc_rqst *, int, __be32 *);
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#ifdef CONFIG_NFSD_V4
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void nfsd4_set_statp(struct svc_rqst *rqstp, __be32 *statp);
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#else /* CONFIG_NFSD_V4 */
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static inline void nfsd4_set_statp(struct svc_rqst *rqstp, __be32 *statp)
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{
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}
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#endif /* CONFIG_NFSD_V4 */
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#endif /* NFSCACHE_H */
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