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