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