1 /* SPDX-License-Identifier: GPL-2.0 */
2 #ifndef _FS_NFSD_PNFS_H
3 #define _FS_NFSD_PNFS_H 1
4
5 #ifdef CONFIG_NFSD_V4
6 #include <linux/exportfs.h>
7 #include <linux/nfsd/export.h>
8
9 #include "state.h"
10 #include "xdr4.h"
11
12 struct xdr_stream;
13
14 struct nfsd4_deviceid_map {
15 struct list_head hash;
16 u64 idx;
17 int fsid_type;
18 u32 fsid[];
19 };
20
21 struct nfsd4_layout_ops {
22 u32 notify_types;
23 bool disable_recalls;
24
25 __be32 (*proc_getdeviceinfo)(struct super_block *sb,
26 struct svc_rqst *rqstp,
27 struct nfs4_client *clp,
28 struct nfsd4_getdeviceinfo *gdevp);
29 __be32 (*encode_getdeviceinfo)(struct xdr_stream *xdr,
30 struct nfsd4_getdeviceinfo *gdevp);
31
32 __be32 (*proc_layoutget)(struct inode *, const struct svc_fh *fhp,
33 struct nfsd4_layoutget *lgp);
34 __be32 (*encode_layoutget)(struct xdr_stream *,
35 struct nfsd4_layoutget *lgp);
36
37 __be32 (*proc_layoutcommit)(struct inode *inode,
38 struct nfsd4_layoutcommit *lcp);
39
40 void (*fence_client)(struct nfs4_layout_stateid *ls);
41 };
42
43 extern const struct nfsd4_layout_ops *nfsd4_layout_ops[];
44 #ifdef CONFIG_NFSD_BLOCKLAYOUT
45 extern const struct nfsd4_layout_ops bl_layout_ops;
46 #endif
47 #ifdef CONFIG_NFSD_SCSILAYOUT
48 extern const struct nfsd4_layout_ops scsi_layout_ops;
49 #endif
50 #ifdef CONFIG_NFSD_FLEXFILELAYOUT
51 extern const struct nfsd4_layout_ops ff_layout_ops;
52 #endif
53
54 __be32 nfsd4_preprocess_layout_stateid(struct svc_rqst *rqstp,
55 struct nfsd4_compound_state *cstate, stateid_t *stateid,
56 bool create, u32 layout_type, struct nfs4_layout_stateid **lsp);
57 __be32 nfsd4_insert_layout(struct nfsd4_layoutget *lgp,
58 struct nfs4_layout_stateid *ls);
59 __be32 nfsd4_return_file_layouts(struct svc_rqst *rqstp,
60 struct nfsd4_compound_state *cstate,
61 struct nfsd4_layoutreturn *lrp);
62 __be32 nfsd4_return_client_layouts(struct svc_rqst *rqstp,
63 struct nfsd4_compound_state *cstate,
64 struct nfsd4_layoutreturn *lrp);
65 int nfsd4_set_deviceid(struct nfsd4_deviceid *id, const struct svc_fh *fhp,
66 u32 device_generation);
67 struct nfsd4_deviceid_map *nfsd4_find_devid_map(int idx);
68 #endif /* CONFIG_NFSD_V4 */
69
70 #ifdef CONFIG_NFSD_PNFS
71 void nfsd4_setup_layout_type(struct svc_export *exp);
72 void nfsd4_return_all_client_layouts(struct nfs4_client *);
73 void nfsd4_return_all_file_layouts(struct nfs4_client *clp,
74 struct nfs4_file *fp);
75 int nfsd4_init_pnfs(void);
76 void nfsd4_exit_pnfs(void);
77 #else
78 struct nfs4_client;
79 struct nfs4_file;
80
nfsd4_setup_layout_type(struct svc_export * exp)81 static inline void nfsd4_setup_layout_type(struct svc_export *exp)
82 {
83 }
84
nfsd4_return_all_client_layouts(struct nfs4_client * clp)85 static inline void nfsd4_return_all_client_layouts(struct nfs4_client *clp)
86 {
87 }
nfsd4_return_all_file_layouts(struct nfs4_client * clp,struct nfs4_file * fp)88 static inline void nfsd4_return_all_file_layouts(struct nfs4_client *clp,
89 struct nfs4_file *fp)
90 {
91 }
nfsd4_exit_pnfs(void)92 static inline void nfsd4_exit_pnfs(void)
93 {
94 }
nfsd4_init_pnfs(void)95 static inline int nfsd4_init_pnfs(void)
96 {
97 return 0;
98 }
99 #endif /* CONFIG_NFSD_PNFS */
100 #endif /* _FS_NFSD_PNFS_H */
101