Cregit: Linux 6.18: blocklayoutxdr.h

Contributors: 10
Author	Tokens	Token Proportion	Commits	Commit Proportion
Christoph Hellwig	165	79.71%	3	20.00%
Unknown	16	7.73%	2	13.33%
Neil Brown	8	3.86%	1	6.67%
J. Bruce Fields	6	2.90%	2	13.33%
Thorsten Blum	5	2.42%	1	6.67%
Linus Torvalds (pre-git)	2	0.97%	1	6.67%
Chuck Lever	2	0.97%	2	13.33%
Greg Kroah-Hartman	1	0.48%	1	6.67%
Boaz Harrosh	1	0.48%	1	6.67%
Al Viro	1	0.48%	1	6.67%
Total	207		15

/* SPDX-License-Identifier: GPL-2.0 */
#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[] __counted_by(nr_volumes);
};

__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);
__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 */