diff options
Diffstat (limited to 'fs/nfsd/blocklayoutxdr.h')
| -rw-r--r-- | fs/nfsd/blocklayoutxdr.h | 22 |
1 files changed, 18 insertions, 4 deletions
diff --git a/fs/nfsd/blocklayoutxdr.h b/fs/nfsd/blocklayoutxdr.h index 4e28ac8f1127..2e0c6c7d2b42 100644 --- a/fs/nfsd/blocklayoutxdr.h +++ b/fs/nfsd/blocklayoutxdr.h @@ -8,6 +8,15 @@ struct iomap; struct xdr_stream; +/* On the wire size of the layout4 struct with zero number of extents */ +#define PNFS_BLOCK_LAYOUT4_SIZE \ + (sizeof(__be32) * 2 + /* offset4 */ \ + sizeof(__be32) * 2 + /* length4 */ \ + sizeof(__be32) + /* layoutiomode4 */ \ + sizeof(__be32) + /* layouttype4 */ \ + sizeof(__be32) + /* number of bytes */ \ + sizeof(__be32)) /* number of extents */ + struct pnfs_block_extent { struct nfsd4_deviceid vol_id; u64 foff; @@ -21,6 +30,11 @@ struct pnfs_block_range { u64 len; }; +struct pnfs_block_layout { + u32 nr_extents; + struct pnfs_block_extent extents[] __counted_by(nr_extents); +}; + /* * Random upper cap for the uuid length to avoid unbounded allocation. * Not actually limited by the protocol. @@ -54,9 +68,9 @@ __be32 nfsd4_block_encode_getdeviceinfo(struct xdr_stream *xdr, const struct nfsd4_getdeviceinfo *gdp); __be32 nfsd4_block_encode_layoutget(struct xdr_stream *xdr, const struct nfsd4_layoutget *lgp); -int nfsd4_block_decode_layoutupdate(__be32 *p, u32 len, struct iomap **iomapp, - u32 block_size); -int nfsd4_scsi_decode_layoutupdate(__be32 *p, u32 len, struct iomap **iomapp, - u32 block_size); +__be32 nfsd4_block_decode_layoutupdate(struct xdr_stream *xdr, + struct iomap **iomapp, int *nr_iomapsp, u32 block_size); +__be32 nfsd4_scsi_decode_layoutupdate(struct xdr_stream *xdr, + struct iomap **iomapp, int *nr_iomapsp, u32 block_size); #endif /* _NFSD_BLOCKLAYOUTXDR_H */ |