[linux-2.6-block.git] / fs / nfsd / blocklayoutxdr.h

#ifndef _NFSD_BLOCKLAYOUTXDR_H
#define _NFSD_BLOCKLAYOUTXDR_H 1

#include <linux/blkdev.h>
#include "xdr4.h"

struct iomap;
struct xdr_stream;

struct pnfs_block_extent {
	struct nfsd4_deviceid		vol_id;
	u64				foff;
	u64				len;
	u64				soff;
	enum pnfs_block_extent_state	es;
};

/*
 * Random upper cap for the uuid length to avoid unbounded allocation.
 * Not actually limited by the protocol.
 */
#define PNFS_BLOCK_UUID_LEN	128

struct pnfs_block_volume {
	enum pnfs_block_volume_type	type;
	union {
		struct {
			u64		offset;
			u32		sig_len;
			u8		sig[PNFS_BLOCK_UUID_LEN];
		} simple;
	};
};

struct pnfs_block_deviceaddr {
	u32				nr_volumes;
	struct pnfs_block_volume	volumes[];
};

__be32 nfsd4_block_encode_getdeviceinfo(struct xdr_stream *xdr,
		struct nfsd4_getdeviceinfo *gdp);
__be32 nfsd4_block_encode_layoutget(struct xdr_stream *xdr,
		struct nfsd4_layoutget *lgp);
int nfsd4_block_decode_layoutupdate(__be32 *p, u32 len, struct iomap **iomapp,
		u32 block_size);

#endif /* _NFSD_BLOCKLAYOUTXDR_H */
Commit	Line	Data
8650b8a0 CH	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
8650b8a0 CH	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	};
8650b8a0 CH	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 */