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
  23        __be32 (*proc_getdeviceinfo)(struct super_block *sb,
  24                        struct svc_rqst *rqstp,
  25                        struct nfs4_client *clp,
  26                        struct nfsd4_getdeviceinfo *gdevp);
  27        __be32 (*encode_getdeviceinfo)(struct xdr_stream *xdr,
  28                        struct nfsd4_getdeviceinfo *gdevp);
  29
  30        __be32 (*proc_layoutget)(struct inode *, const struct svc_fh *fhp,
  31                        struct nfsd4_layoutget *lgp);
  32        __be32 (*encode_layoutget)(struct xdr_stream *,
  33                        struct nfsd4_layoutget *lgp);
  34
  35        __be32 (*proc_layoutcommit)(struct inode *inode,
  36                        struct nfsd4_layoutcommit *lcp);
  37
  38        void (*fence_client)(struct nfs4_layout_stateid *ls);
  39};
  40
  41extern const struct nfsd4_layout_ops *nfsd4_layout_ops[];
  42#ifdef CONFIG_NFSD_BLOCKLAYOUT
  43extern const struct nfsd4_layout_ops bl_layout_ops;
  44#endif
  45#ifdef CONFIG_NFSD_SCSILAYOUT
  46extern const struct nfsd4_layout_ops scsi_layout_ops;
  47#endif
  48#ifdef CONFIG_NFSD_FLEXFILELAYOUT
  49extern const struct nfsd4_layout_ops ff_layout_ops;
  50#endif
  51
  52__be32 nfsd4_preprocess_layout_stateid(struct svc_rqst *rqstp,
  53                struct nfsd4_compound_state *cstate, stateid_t *stateid,
  54                bool create, u32 layout_type, struct nfs4_layout_stateid **lsp);
  55__be32 nfsd4_insert_layout(struct nfsd4_layoutget *lgp,
  56                struct nfs4_layout_stateid *ls);
  57__be32 nfsd4_return_file_layouts(struct svc_rqst *rqstp,
  58                struct nfsd4_compound_state *cstate,
  59                struct nfsd4_layoutreturn *lrp);
  60__be32 nfsd4_return_client_layouts(struct svc_rqst *rqstp,
  61                struct nfsd4_compound_state *cstate,
  62                struct nfsd4_layoutreturn *lrp);
  63int nfsd4_set_deviceid(struct nfsd4_deviceid *id, const struct svc_fh *fhp,
  64                u32 device_generation);
  65struct nfsd4_deviceid_map *nfsd4_find_devid_map(int idx);
  66#endif /* CONFIG_NFSD_V4 */
  67
  68#ifdef CONFIG_NFSD_PNFS
  69void nfsd4_setup_layout_type(struct svc_export *exp);
  70void nfsd4_return_all_client_layouts(struct nfs4_client *);
  71void nfsd4_return_all_file_layouts(struct nfs4_client *clp,
  72                struct nfs4_file *fp);
  73int nfsd4_init_pnfs(void);
  74void nfsd4_exit_pnfs(void);
  75#else
  76struct nfs4_client;
  77struct nfs4_file;
  78
  79static inline void nfsd4_setup_layout_type(struct svc_export *exp)
  80{
  81}
  82
  83static inline void nfsd4_return_all_client_layouts(struct nfs4_client *clp)
  84{
  85}
  86static inline void nfsd4_return_all_file_layouts(struct nfs4_client *clp,
  87                struct nfs4_file *fp)
  88{
  89}
  90static inline void nfsd4_exit_pnfs(void)
  91{
  92}
  93static inline int nfsd4_init_pnfs(void)
  94{
  95        return 0;
  96}
  97#endif /* CONFIG_NFSD_PNFS */
  98#endif /* _FS_NFSD_PNFS_H */
  99