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