1 #ifndef _NFSD_BLOCKLAYOUTXDR_H 2 #define _NFSD_BLOCKLAYOUTXDR_H 1 3 4 #include <linux/blkdev.h> 5 #include "xdr4.h" 6 7 struct iomap; 8 struct xdr_stream; 9 10 struct pnfs_block_extent { 11 struct nfsd4_deviceid vol_id; 12 u64 foff; 13 u64 len; 14 u64 soff; 15 enum pnfs_block_extent_state es; 16 }; 17 18 /* 19 * Random upper cap for the uuid length to avoid unbounded allocation. 20 * Not actually limited by the protocol. 21 */ 22 #define PNFS_BLOCK_UUID_LEN 128 23 24 struct pnfs_block_volume { 25 enum pnfs_block_volume_type type; 26 union { 27 struct { 28 u64 offset; 29 u32 sig_len; 30 u8 sig[PNFS_BLOCK_UUID_LEN]; 31 } simple; 32 }; 33 }; 34 35 struct pnfs_block_deviceaddr { 36 u32 nr_volumes; 37 struct pnfs_block_volume volumes[]; 38 }; 39 40 __be32 nfsd4_block_encode_getdeviceinfo(struct xdr_stream *xdr, 41 struct nfsd4_getdeviceinfo *gdp); 42 __be32 nfsd4_block_encode_layoutget(struct xdr_stream *xdr, 43 struct nfsd4_layoutget *lgp); 44 int nfsd4_block_decode_layoutupdate(__be32 *p, u32 len, struct iomap **iomapp, 45 u32 block_size); 46 47 #endif /* _NFSD_BLOCKLAYOUTXDR_H */ 48