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/* SPDX-License-Identifier: GPL-2.0 */
#ifndef _FS_NFSD_PNFS_H
#define _FS_NFSD_PNFS_H 1
#ifdef CONFIG_NFSD_V4
#include <linux/exportfs.h>
#include <linux/nfsd/export.h>
#include "state.h"
#include "xdr4.h"
struct xdr_stream;
struct nfsd4_deviceid_map {
struct list_head hash;
u64 idx;
int fsid_type;
u32 fsid[];
};
struct nfsd4_layout_ops {
u32 notify_types;
bool disable_recalls;
__be32 (*proc_getdeviceinfo)(struct super_block *sb,
struct svc_rqst *rqstp,
struct nfs4_client *clp,
struct nfsd4_getdeviceinfo *gdevp);
__be32 (*encode_getdeviceinfo)(struct xdr_stream *xdr,
const struct nfsd4_getdeviceinfo *gdevp);
__be32 (*proc_layoutget)(struct inode *, const struct svc_fh *fhp,
struct nfsd4_layoutget *lgp);
__be32 (*encode_layoutget)(struct xdr_stream *xdr,
const struct nfsd4_layoutget *lgp);
__be32 (*proc_layoutcommit)(struct inode *inode,
struct nfsd4_layoutcommit *lcp);
void (*fence_client)(struct nfs4_layout_stateid *ls,
struct nfsd_file *file);
};
extern const struct nfsd4_layout_ops *nfsd4_layout_ops[];
#ifdef CONFIG_NFSD_BLOCKLAYOUT
extern const struct nfsd4_layout_ops bl_layout_ops;
#endif
#ifdef CONFIG_NFSD_SCSILAYOUT
extern const struct nfsd4_layout_ops scsi_layout_ops;
#endif
#ifdef CONFIG_NFSD_FLEXFILELAYOUT
extern const struct nfsd4_layout_ops ff_layout_ops;
#endif
__be32 nfsd4_preprocess_layout_stateid(struct svc_rqst *rqstp,
struct nfsd4_compound_state *cstate, stateid_t *stateid,
bool create, u32 layout_type, struct nfs4_layout_stateid **lsp);
__be32 nfsd4_insert_layout(struct nfsd4_layoutget *lgp,
struct nfs4_layout_stateid *ls);
__be32 nfsd4_return_file_layouts(struct svc_rqst *rqstp,
struct nfsd4_compound_state *cstate,
struct nfsd4_layoutreturn *lrp);
__be32 nfsd4_return_client_layouts(struct svc_rqst *rqstp,
struct nfsd4_compound_state *cstate,
struct nfsd4_layoutreturn *lrp);
int nfsd4_set_deviceid(struct nfsd4_deviceid *id, const struct svc_fh *fhp,
u32 device_generation);
struct nfsd4_deviceid_map *nfsd4_find_devid_map(int idx);
#endif /* CONFIG_NFSD_V4 */
#ifdef CONFIG_NFSD_PNFS
void nfsd4_setup_layout_type(struct svc_export *exp);
void nfsd4_return_all_client_layouts(struct nfs4_client *);
void nfsd4_return_all_file_layouts(struct nfs4_client *clp,
struct nfs4_file *fp);
void nfsd4_close_layout(struct nfs4_layout_stateid *ls);
int nfsd4_init_pnfs(void);
void nfsd4_exit_pnfs(void);
#else
struct nfs4_client;
struct nfs4_file;
struct nfs4_layout_stateid;
static inline void nfsd4_setup_layout_type(struct svc_export *exp)
{
}
static inline void nfsd4_return_all_client_layouts(struct nfs4_client *clp)
{
}
static inline void nfsd4_return_all_file_layouts(struct nfs4_client *clp,
struct nfs4_file *fp)
{
}
static inline void nfsd4_close_layout(struct nfs4_layout_stateid *ls)
{
}
static inline void nfsd4_exit_pnfs(void)
{
}
static inline int nfsd4_init_pnfs(void)
{
return 0;
}
#endif /* CONFIG_NFSD_PNFS */
#endif /* _FS_NFSD_PNFS_H */
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