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