[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;
};

struct pnfs_block_range {
	u64				foff;
	u64				len;
};

/*
 * 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 {
			enum scsi_code_set		code_set;
			enum scsi_designator_type	designator_type;
			int				designator_len;
			u8				designator[256];
			u64				pr_key;
		} scsi;
	};
};

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);
int nfsd4_scsi_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	17
f99d4fbd CH	18	struct pnfs_block_range {
	19	u64 foff;
	20	u64 len;
	21	};
	22
8650b8a0 CH	23	/*
	24	* Random upper cap for the uuid length to avoid unbounded allocation.
	25	* Not actually limited by the protocol.
	26	*/
	27	#define PNFS_BLOCK_UUID_LEN 128
	28
	29	struct pnfs_block_volume {
	30	enum pnfs_block_volume_type type;
	31	union {
	32	struct {
	33	u64 offset;
	34	u32 sig_len;
	35	u8 sig[PNFS_BLOCK_UUID_LEN];
	36	} simple;
f99d4fbd CH	37	struct {
	38	enum scsi_code_set code_set;
	39	enum scsi_designator_type designator_type;
	40	int designator_len;
	41	u8 designator[256];
	42	u64 pr_key;
	43	} scsi;
8650b8a0 CH	44	};
	45	};
	46
	47	struct pnfs_block_deviceaddr {
	48	u32 nr_volumes;
	49	struct pnfs_block_volume volumes[];
	50	};
	51
	52	__be32 nfsd4_block_encode_getdeviceinfo(struct xdr_stream *xdr,
	53	struct nfsd4_getdeviceinfo *gdp);
	54	__be32 nfsd4_block_encode_layoutget(struct xdr_stream *xdr,
	55	struct nfsd4_layoutget *lgp);
	56	int nfsd4_block_decode_layoutupdate(__be32 p, u32 len, struct iomap *iomapp,
	57	u32 block_size);
f99d4fbd CH	58	int nfsd4_scsi_decode_layoutupdate(__be32 p, u32 len, struct iomap *iomapp,
f99d4fbd CH	59	u32 block_size);
8650b8a0 CH	60
8650b8a0 CH	61	#endif /* _NFSD_BLOCKLAYOUTXDR_H */