LXR linux/fs/nfsd/pnfs.h

   1#ifndef _FS_NFSD_PNFS_H
   2#define _FS_NFSD_PNFS_H 1
   3
   4#ifdef CONFIG_NFSD_V4
   5#include <linux/exportfs.h>
   6#include <linux/nfsd/export.h>
   7
   8#include "state.h"
   9#include "xdr4.h"
  10
  11struct xdr_stream;
  12
  13struct nfsd4_deviceid_map {
  14        struct list_head        hash;
  15        u64                     idx;
  16        int                     fsid_type;
  17        u32                     fsid[];
  18};
  19
  20struct nfsd4_layout_ops {
  21        u32             notify_types;
  22        bool            disable_recalls;
  23
  24        __be32 (*proc_getdeviceinfo)(struct super_block *sb,
  25                        struct svc_rqst *rqstp,
  26                        struct nfs4_client *clp,
  27                        struct nfsd4_getdeviceinfo *gdevp);
  28        __be32 (*encode_getdeviceinfo)(struct xdr_stream *xdr,
  29                        struct nfsd4_getdeviceinfo *gdevp);
  30
  31        __be32 (*proc_layoutget)(struct inode *, const struct svc_fh *fhp,
  32                        struct nfsd4_layoutget *lgp);
  33        __be32 (*encode_layoutget)(struct xdr_stream *,
  34                        struct nfsd4_layoutget *lgp);
  35
  36        __be32 (*proc_layoutcommit)(struct inode *inode,
  37                        struct nfsd4_layoutcommit *lcp);
  38
  39        void (*fence_client)(struct nfs4_layout_stateid *ls);
  40};
  41
  42extern const struct nfsd4_layout_ops *nfsd4_layout_ops[];
  43#ifdef CONFIG_NFSD_BLOCKLAYOUT
  44extern const struct nfsd4_layout_ops bl_layout_ops;
  45#endif
  46#ifdef CONFIG_NFSD_SCSILAYOUT
  47extern const struct nfsd4_layout_ops scsi_layout_ops;
  48#endif
  49#ifdef CONFIG_NFSD_FLEXFILELAYOUT
  50extern const struct nfsd4_layout_ops ff_layout_ops;
  51#endif
  52
  53__be32 nfsd4_preprocess_layout_stateid(struct svc_rqst *rqstp,
  54                struct nfsd4_compound_state *cstate, stateid_t *stateid,
  55                bool create, u32 layout_type, struct nfs4_layout_stateid **lsp);
  56__be32 nfsd4_insert_layout(struct nfsd4_layoutget *lgp,
  57                struct nfs4_layout_stateid *ls);
  58__be32 nfsd4_return_file_layouts(struct svc_rqst *rqstp,
  59                struct nfsd4_compound_state *cstate,
  60                struct nfsd4_layoutreturn *lrp);
  61__be32 nfsd4_return_client_layouts(struct svc_rqst *rqstp,
  62                struct nfsd4_compound_state *cstate,
  63                struct nfsd4_layoutreturn *lrp);
  64int nfsd4_set_deviceid(struct nfsd4_deviceid *id, const struct svc_fh *fhp,
  65                u32 device_generation);
  66struct nfsd4_deviceid_map *nfsd4_find_devid_map(int idx);
  67#endif /* CONFIG_NFSD_V4 */
  68
  69#ifdef CONFIG_NFSD_PNFS
  70void nfsd4_setup_layout_type(struct svc_export *exp);
  71void nfsd4_return_all_client_layouts(struct nfs4_client *);
  72void nfsd4_return_all_file_layouts(struct nfs4_client *clp,
  73                struct nfs4_file *fp);
  74int nfsd4_init_pnfs(void);
  75void nfsd4_exit_pnfs(void);
  76#else
  77struct nfs4_client;
  78struct nfs4_file;
  79
  80static inline void nfsd4_setup_layout_type(struct svc_export *exp)
  81{
  82}
  83
  84static inline void nfsd4_return_all_client_layouts(struct nfs4_client *clp)
  85{
  86}
  87static inline void nfsd4_return_all_file_layouts(struct nfs4_client *clp,
  88                struct nfs4_file *fp)
  89{
  90}
  91static inline void nfsd4_exit_pnfs(void)
  92{
  93}
  94static inline int nfsd4_init_pnfs(void)
  95{
  96        return 0;
  97}
  98#endif /* CONFIG_NFSD_PNFS */
  99#endif /* _FS_NFSD_PNFS_H */
 100