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