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 | }; |
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 | |
81 | static inline void nfsd4_setup_layout_type(struct svc_export *exp) |
82 | { |
83 | } |
84 | |
85 | static inline void nfsd4_return_all_client_layouts(struct nfs4_client *clp) |
86 | { |
87 | } |
88 | static inline void nfsd4_return_all_file_layouts(struct nfs4_client *clp, |
89 | struct nfs4_file *fp) |
90 | { |
91 | } |
92 | static inline void nfsd4_exit_pnfs(void) |
93 | { |
94 | } |
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 | |