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 nfs4_client *clp, 25 struct nfsd4_getdeviceinfo *gdevp); 26 __be32 (*encode_getdeviceinfo)(struct xdr_stream *xdr, 27 struct nfsd4_getdeviceinfo *gdevp); 28 29 __be32 (*proc_layoutget)(struct inode *, const struct svc_fh *fhp, 30 struct nfsd4_layoutget *lgp); 31 __be32 (*encode_layoutget)(struct xdr_stream *, 32 struct nfsd4_layoutget *lgp); 33 34 __be32 (*proc_layoutcommit)(struct inode *inode, 35 struct nfsd4_layoutcommit *lcp); 36 37 void (*fence_client)(struct nfs4_layout_stateid *ls); 38 }; 39 40 extern const struct nfsd4_layout_ops *nfsd4_layout_ops[]; 41 #ifdef CONFIG_NFSD_BLOCKLAYOUT 42 extern const struct nfsd4_layout_ops bl_layout_ops; 43 #endif 44 #ifdef CONFIG_NFSD_SCSILAYOUT 45 extern const struct nfsd4_layout_ops scsi_layout_ops; 46 #endif 47 48 __be32 nfsd4_preprocess_layout_stateid(struct svc_rqst *rqstp, 49 struct nfsd4_compound_state *cstate, stateid_t *stateid, 50 bool create, u32 layout_type, struct nfs4_layout_stateid **lsp); 51 __be32 nfsd4_insert_layout(struct nfsd4_layoutget *lgp, 52 struct nfs4_layout_stateid *ls); 53 __be32 nfsd4_return_file_layouts(struct svc_rqst *rqstp, 54 struct nfsd4_compound_state *cstate, 55 struct nfsd4_layoutreturn *lrp); 56 __be32 nfsd4_return_client_layouts(struct svc_rqst *rqstp, 57 struct nfsd4_compound_state *cstate, 58 struct nfsd4_layoutreturn *lrp); 59 int nfsd4_set_deviceid(struct nfsd4_deviceid *id, const struct svc_fh *fhp, 60 u32 device_generation); 61 struct nfsd4_deviceid_map *nfsd4_find_devid_map(int idx); 62 #endif /* CONFIG_NFSD_V4 */ 63 64 #ifdef CONFIG_NFSD_PNFS 65 void nfsd4_setup_layout_type(struct svc_export *exp); 66 void nfsd4_return_all_client_layouts(struct nfs4_client *); 67 void nfsd4_return_all_file_layouts(struct nfs4_client *clp, 68 struct nfs4_file *fp); 69 int nfsd4_init_pnfs(void); 70 void nfsd4_exit_pnfs(void); 71 #else 72 struct nfs4_client; 73 struct nfs4_file; 74 75 static inline void nfsd4_setup_layout_type(struct svc_export *exp) 76 { 77 } 78 79 static inline void nfsd4_return_all_client_layouts(struct nfs4_client *clp) 80 { 81 } 82 static inline void nfsd4_return_all_file_layouts(struct nfs4_client *clp, 83 struct nfs4_file *fp) 84 { 85 } 86 static inline void nfsd4_exit_pnfs(void) 87 { 88 } 89 static inline int nfsd4_init_pnfs(void) 90 { 91 return 0; 92 } 93 #endif /* CONFIG_NFSD_PNFS */ 94 #endif /* _FS_NFSD_PNFS_H */ 95