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 svc_rqst *rqstp, struct inode *inode, 33 const struct svc_fh *fhp, 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 svc_rqst *rqstp, 39 struct nfsd4_layoutcommit *lcp); 40 41 void (*fence_client)(struct nfs4_layout_stateid *ls, 42 struct nfsd_file *file); 43 }; 44 45 extern const struct nfsd4_layout_ops *nfsd4_layout_ops[]; 46 #ifdef CONFIG_NFSD_BLOCKLAYOUT 47 extern const struct nfsd4_layout_ops bl_layout_ops; 48 #endif 49 #ifdef CONFIG_NFSD_SCSILAYOUT 50 extern const struct nfsd4_layout_ops scsi_layout_ops; 51 #endif 52 #ifdef CONFIG_NFSD_FLEXFILELAYOUT 53 extern const struct nfsd4_layout_ops ff_layout_ops; 54 #endif 55 56 __be32 nfsd4_preprocess_layout_stateid(struct svc_rqst *rqstp, 57 struct nfsd4_compound_state *cstate, stateid_t *stateid, 58 bool create, u32 layout_type, struct nfs4_layout_stateid **lsp); 59 __be32 nfsd4_insert_layout(struct nfsd4_layoutget *lgp, 60 struct nfs4_layout_stateid *ls); 61 __be32 nfsd4_return_file_layouts(struct svc_rqst *rqstp, 62 struct nfsd4_compound_state *cstate, 63 struct nfsd4_layoutreturn *lrp); 64 __be32 nfsd4_return_client_layouts(struct svc_rqst *rqstp, 65 struct nfsd4_compound_state *cstate, 66 struct nfsd4_layoutreturn *lrp); 67 int nfsd4_set_deviceid(struct nfsd4_deviceid *id, const struct svc_fh *fhp, 68 u32 device_generation); 69 struct nfsd4_deviceid_map *nfsd4_find_devid_map(int idx); 70 #endif /* CONFIG_NFSD_V4 */ 71 72 #ifdef CONFIG_NFSD_PNFS 73 void nfsd4_setup_layout_type(struct svc_export *exp); 74 void nfsd4_return_all_client_layouts(struct nfs4_client *); 75 void nfsd4_return_all_file_layouts(struct nfs4_client *clp, 76 struct nfs4_file *fp); 77 void nfsd4_close_layout(struct nfs4_layout_stateid *ls); 78 int nfsd4_init_pnfs(void); 79 void nfsd4_exit_pnfs(void); 80 #else 81 struct nfs4_client; 82 struct nfs4_file; 83 struct nfs4_layout_stateid; 84 85 static inline void nfsd4_setup_layout_type(struct svc_export *exp) 86 { 87 } 88 89 static inline void nfsd4_return_all_client_layouts(struct nfs4_client *clp) 90 { 91 } 92 static inline void nfsd4_return_all_file_layouts(struct nfs4_client *clp, 93 struct nfs4_file *fp) 94 { 95 } 96 static inline void nfsd4_close_layout(struct nfs4_layout_stateid *ls) 97 { 98 } 99 static inline void nfsd4_exit_pnfs(void) 100 { 101 } 102 static inline int nfsd4_init_pnfs(void) 103 { 104 return 0; 105 } 106 #endif /* CONFIG_NFSD_PNFS */ 107 #endif /* _FS_NFSD_PNFS_H */ 108