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 12struct xdr_stream; 13 14struct nfsd4_deviceid_map { 15 struct list_head hash; 16 u64 idx; 17 int fsid_type; 18 u32 fsid[]; 19}; 20 21struct 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 44extern const struct nfsd4_layout_ops *nfsd4_layout_ops[]; 45#ifdef CONFIG_NFSD_BLOCKLAYOUT 46extern const struct nfsd4_layout_ops bl_layout_ops; 47#endif 48#ifdef CONFIG_NFSD_SCSILAYOUT 49extern const struct nfsd4_layout_ops scsi_layout_ops; 50#endif 51#ifdef CONFIG_NFSD_FLEXFILELAYOUT 52extern 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); 66int nfsd4_set_deviceid(struct nfsd4_deviceid *id, const struct svc_fh *fhp, 67 u32 device_generation); 68struct nfsd4_deviceid_map *nfsd4_find_devid_map(int idx); 69#endif /* CONFIG_NFSD_V4 */ 70 71#ifdef CONFIG_NFSD_PNFS 72void nfsd4_setup_layout_type(struct svc_export *exp); 73void nfsd4_return_all_client_layouts(struct nfs4_client *); 74void nfsd4_return_all_file_layouts(struct nfs4_client *clp, 75 struct nfs4_file *fp); 76void nfsd4_close_layout(struct nfs4_layout_stateid *ls); 77int nfsd4_init_pnfs(void); 78void nfsd4_exit_pnfs(void); 79#else 80struct nfs4_client; 81struct nfs4_file; 82struct nfs4_layout_stateid; 83 84static inline void nfsd4_setup_layout_type(struct svc_export *exp) 85{ 86} 87 88static inline void nfsd4_return_all_client_layouts(struct nfs4_client *clp) 89{ 90} 91static inline void nfsd4_return_all_file_layouts(struct nfs4_client *clp, 92 struct nfs4_file *fp) 93{ 94} 95static inline void nfsd4_close_layout(struct nfs4_layout_stateid *ls) 96{ 97} 98static inline void nfsd4_exit_pnfs(void) 99{ 100} 101static inline int nfsd4_init_pnfs(void) 102{ 103 return 0; 104} 105#endif /* CONFIG_NFSD_PNFS */ 106#endif /* _FS_NFSD_PNFS_H */ 107