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 | const 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 *xdr, |
35 | const 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 | struct nfsd_file *file); |
42 | }; |
43 | |
44 | extern const struct nfsd4_layout_ops *nfsd4_layout_ops[]; |
45 | #ifdef CONFIG_NFSD_BLOCKLAYOUT |
46 | extern const struct nfsd4_layout_ops bl_layout_ops; |
47 | #endif |
48 | #ifdef CONFIG_NFSD_SCSILAYOUT |
49 | extern const struct nfsd4_layout_ops scsi_layout_ops; |
50 | #endif |
51 | #ifdef CONFIG_NFSD_FLEXFILELAYOUT |
52 | extern const struct nfsd4_layout_ops ff_layout_ops; |
53 | #endif |
54 | |
55 | __be32 nfsd4_preprocess_layout_stateid(struct svc_rqst *rqstp, |
56 | struct nfsd4_compound_state *cstate, stateid_t *stateid, |
57 | bool create, u32 layout_type, struct nfs4_layout_stateid **lsp); |
58 | __be32 nfsd4_insert_layout(struct nfsd4_layoutget *lgp, |
59 | struct nfs4_layout_stateid *ls); |
60 | __be32 nfsd4_return_file_layouts(struct svc_rqst *rqstp, |
61 | struct nfsd4_compound_state *cstate, |
62 | struct nfsd4_layoutreturn *lrp); |
63 | __be32 nfsd4_return_client_layouts(struct svc_rqst *rqstp, |
64 | struct nfsd4_compound_state *cstate, |
65 | struct nfsd4_layoutreturn *lrp); |
66 | int nfsd4_set_deviceid(struct nfsd4_deviceid *id, const struct svc_fh *fhp, |
67 | u32 device_generation); |
68 | struct nfsd4_deviceid_map *nfsd4_find_devid_map(int idx); |
69 | #endif /* CONFIG_NFSD_V4 */ |
70 | |
71 | #ifdef CONFIG_NFSD_PNFS |
72 | void nfsd4_setup_layout_type(struct svc_export *exp); |
73 | void nfsd4_return_all_client_layouts(struct nfs4_client *); |
74 | void nfsd4_return_all_file_layouts(struct nfs4_client *clp, |
75 | struct nfs4_file *fp); |
76 | void nfsd4_close_layout(struct nfs4_layout_stateid *ls); |
77 | int nfsd4_init_pnfs(void); |
78 | void nfsd4_exit_pnfs(void); |
79 | #else |
80 | struct nfs4_client; |
81 | struct nfs4_file; |
82 | struct nfs4_layout_stateid; |
83 | |
84 | static inline void nfsd4_setup_layout_type(struct svc_export *exp) |
85 | { |
86 | } |
87 | |
88 | static inline void nfsd4_return_all_client_layouts(struct nfs4_client *clp) |
89 | { |
90 | } |
91 | static inline void nfsd4_return_all_file_layouts(struct nfs4_client *clp, |
92 | struct nfs4_file *fp) |
93 | { |
94 | } |
95 | static inline void nfsd4_close_layout(struct nfs4_layout_stateid *ls) |
96 | { |
97 | } |
98 | static inline void nfsd4_exit_pnfs(void) |
99 | { |
100 | } |
101 | static inline int nfsd4_init_pnfs(void) |
102 | { |
103 | return 0; |
104 | } |
105 | #endif /* CONFIG_NFSD_PNFS */ |
106 | #endif /* _FS_NFSD_PNFS_H */ |
107 | |