[deliverable/linux.git] / fs / nfs / nfs42xdr.c

/*
 * Copyright (c) 2014 Anna Schumaker <Anna.Schumaker@Netapp.com>
 */
#ifndef __LINUX_FS_NFS_NFS4_2XDR_H
#define __LINUX_FS_NFS_NFS4_2XDR_H

#include "nfs42.h"

#define encode_fallocate_maxsz		(encode_stateid_maxsz + \
					 2 /* offset */ + \
					 2 /* length */)
#define NFS42_WRITE_RES_SIZE		(1 /* wr_callback_id size */ +\
					 XDR_QUADLEN(NFS4_STATEID_SIZE) + \
					 2 /* wr_count */ + \
					 1 /* wr_committed */ + \
					 XDR_QUADLEN(NFS4_VERIFIER_SIZE))
#define encode_allocate_maxsz		(op_encode_hdr_maxsz + \
					 encode_fallocate_maxsz)
#define decode_allocate_maxsz		(op_decode_hdr_maxsz)
#define encode_copy_maxsz		(op_encode_hdr_maxsz +          \
					 XDR_QUADLEN(NFS4_STATEID_SIZE) + \
					 XDR_QUADLEN(NFS4_STATEID_SIZE) + \
					 2 + 2 + 2 + 1 + 1 + 1)
#define decode_copy_maxsz		(op_decode_hdr_maxsz + \
					 NFS42_WRITE_RES_SIZE + \
					 1 /* cr_consecutive */ + \
					 1 /* cr_synchronous */)
#define encode_deallocate_maxsz		(op_encode_hdr_maxsz + \
					 encode_fallocate_maxsz)
#define decode_deallocate_maxsz		(op_decode_hdr_maxsz)
#define encode_seek_maxsz		(op_encode_hdr_maxsz + \
					 encode_stateid_maxsz + \
					 2 /* offset */ + \
					 1 /* whence */)
#define decode_seek_maxsz		(op_decode_hdr_maxsz + \
					 1 /* eof */ + \
					 1 /* whence */ + \
					 2 /* offset */ + \
					 2 /* length */)
#define encode_io_info_maxsz		4
#define encode_layoutstats_maxsz	(op_decode_hdr_maxsz + \
					2 /* offset */ + \
					2 /* length */ + \
					encode_stateid_maxsz + \
					encode_io_info_maxsz + \
					encode_io_info_maxsz + \
					1 /* opaque devaddr4 length */ + \
					XDR_QUADLEN(PNFS_LAYOUTSTATS_MAXSIZE))
#define decode_layoutstats_maxsz	(op_decode_hdr_maxsz)
#define encode_clone_maxsz		(encode_stateid_maxsz + \
					encode_stateid_maxsz + \
					2 /* src offset */ + \
					2 /* dst offset */ + \
					2 /* count */)
#define decode_clone_maxsz		(op_decode_hdr_maxsz)

#define NFS4_enc_allocate_sz		(compound_encode_hdr_maxsz + \
					 encode_putfh_maxsz + \
					 encode_allocate_maxsz + \
					 encode_getattr_maxsz)
#define NFS4_dec_allocate_sz		(compound_decode_hdr_maxsz + \
					 decode_putfh_maxsz + \
					 decode_allocate_maxsz + \
					 decode_getattr_maxsz)
#define NFS4_enc_copy_sz		(compound_encode_hdr_maxsz + \
					 encode_putfh_maxsz + \
					 encode_savefh_maxsz + \
					 encode_putfh_maxsz + \
					 encode_copy_maxsz)
#define NFS4_dec_copy_sz		(compound_decode_hdr_maxsz + \
					 decode_putfh_maxsz + \
					 decode_savefh_maxsz + \
					 decode_putfh_maxsz + \
					 decode_copy_maxsz)
#define NFS4_enc_deallocate_sz		(compound_encode_hdr_maxsz + \
					 encode_putfh_maxsz + \
					 encode_deallocate_maxsz + \
					 encode_getattr_maxsz)
#define NFS4_dec_deallocate_sz		(compound_decode_hdr_maxsz + \
					 decode_putfh_maxsz + \
					 decode_deallocate_maxsz + \
					 decode_getattr_maxsz)
#define NFS4_enc_seek_sz		(compound_encode_hdr_maxsz + \
					 encode_putfh_maxsz + \
					 encode_seek_maxsz)
#define NFS4_dec_seek_sz		(compound_decode_hdr_maxsz + \
					 decode_putfh_maxsz + \
					 decode_seek_maxsz)
#define NFS4_enc_layoutstats_sz		(compound_encode_hdr_maxsz + \
					 encode_sequence_maxsz + \
					 encode_putfh_maxsz + \
					 PNFS_LAYOUTSTATS_MAXDEV * encode_layoutstats_maxsz)
#define NFS4_dec_layoutstats_sz		(compound_decode_hdr_maxsz + \
					 decode_sequence_maxsz + \
					 decode_putfh_maxsz + \
					 PNFS_LAYOUTSTATS_MAXDEV * decode_layoutstats_maxsz)
#define NFS4_enc_clone_sz		(compound_encode_hdr_maxsz + \
					 encode_sequence_maxsz + \
					 encode_putfh_maxsz + \
					 encode_savefh_maxsz + \
					 encode_putfh_maxsz + \
					 encode_clone_maxsz + \
					 encode_getattr_maxsz)
#define NFS4_dec_clone_sz		(compound_decode_hdr_maxsz + \
					 decode_sequence_maxsz + \
					 decode_putfh_maxsz + \
					 decode_savefh_maxsz + \
					 decode_putfh_maxsz + \
					 decode_clone_maxsz + \
					 decode_getattr_maxsz)

static void encode_fallocate(struct xdr_stream *xdr,
			     struct nfs42_falloc_args *args)
{
	encode_nfs4_stateid(xdr, &args->falloc_stateid);
	encode_uint64(xdr, args->falloc_offset);
	encode_uint64(xdr, args->falloc_length);
}

static void encode_allocate(struct xdr_stream *xdr,
			    struct nfs42_falloc_args *args,
			    struct compound_hdr *hdr)
{
	encode_op_hdr(xdr, OP_ALLOCATE, decode_allocate_maxsz, hdr);
	encode_fallocate(xdr, args);
}

static void encode_copy(struct xdr_stream *xdr,
			struct nfs42_copy_args *args,
			struct compound_hdr *hdr)
{
	encode_op_hdr(xdr, OP_COPY, decode_copy_maxsz, hdr);
	encode_nfs4_stateid(xdr, &args->src_stateid);
	encode_nfs4_stateid(xdr, &args->dst_stateid);

	encode_uint64(xdr, args->src_pos);
	encode_uint64(xdr, args->dst_pos);
	encode_uint64(xdr, args->count);

	encode_uint32(xdr, 1); /* consecutive = true */
	encode_uint32(xdr, 1); /* synchronous = true */
	encode_uint32(xdr, 0); /* src server list */
}

static void encode_deallocate(struct xdr_stream *xdr,
			      struct nfs42_falloc_args *args,
			      struct compound_hdr *hdr)
{
	encode_op_hdr(xdr, OP_DEALLOCATE, decode_deallocate_maxsz, hdr);
	encode_fallocate(xdr, args);
}

static void encode_seek(struct xdr_stream *xdr,
			struct nfs42_seek_args *args,
			struct compound_hdr *hdr)
{
	encode_op_hdr(xdr, OP_SEEK, decode_seek_maxsz, hdr);
	encode_nfs4_stateid(xdr, &args->sa_stateid);
	encode_uint64(xdr, args->sa_offset);
	encode_uint32(xdr, args->sa_what);
}

static void encode_layoutstats(struct xdr_stream *xdr,
			       struct nfs42_layoutstat_args *args,
			       struct nfs42_layoutstat_devinfo *devinfo,
			       struct compound_hdr *hdr)
{
	__be32 *p;

	encode_op_hdr(xdr, OP_LAYOUTSTATS, decode_layoutstats_maxsz, hdr);
	p = reserve_space(xdr, 8 + 8);
	p = xdr_encode_hyper(p, devinfo->offset);
	p = xdr_encode_hyper(p, devinfo->length);
	encode_nfs4_stateid(xdr, &args->stateid);
	p = reserve_space(xdr, 4*8 + NFS4_DEVICEID4_SIZE + 4);
	p = xdr_encode_hyper(p, devinfo->read_count);
	p = xdr_encode_hyper(p, devinfo->read_bytes);
	p = xdr_encode_hyper(p, devinfo->write_count);
	p = xdr_encode_hyper(p, devinfo->write_bytes);
	p = xdr_encode_opaque_fixed(p, devinfo->dev_id.data,
			NFS4_DEVICEID4_SIZE);
	/* Encode layoutupdate4 */
	*p++ = cpu_to_be32(devinfo->layout_type);
	if (devinfo->layoutstats_encode != NULL)
		devinfo->layoutstats_encode(xdr, args, devinfo);
	else
		encode_uint32(xdr, 0);
}

static void encode_clone(struct xdr_stream *xdr,
			 struct nfs42_clone_args *args,
			 struct compound_hdr *hdr)
{
	__be32 *p;

	encode_op_hdr(xdr, OP_CLONE, decode_clone_maxsz, hdr);
	encode_nfs4_stateid(xdr, &args->src_stateid);
	encode_nfs4_stateid(xdr, &args->dst_stateid);
	p = reserve_space(xdr, 3*8);
	p = xdr_encode_hyper(p, args->src_offset);
	p = xdr_encode_hyper(p, args->dst_offset);
	xdr_encode_hyper(p, args->count);
}

/*
 * Encode ALLOCATE request
 */
static void nfs4_xdr_enc_allocate(struct rpc_rqst *req,
				  struct xdr_stream *xdr,
				  struct nfs42_falloc_args *args)
{
	struct compound_hdr hdr = {
		.minorversion = nfs4_xdr_minorversion(&args->seq_args),
	};

	encode_compound_hdr(xdr, req, &hdr);
	encode_sequence(xdr, &args->seq_args, &hdr);
	encode_putfh(xdr, args->falloc_fh, &hdr);
	encode_allocate(xdr, args, &hdr);
	encode_getfattr(xdr, args->falloc_bitmask, &hdr);
	encode_nops(&hdr);
}

/*
 * Encode COPY request
 */
static void nfs4_xdr_enc_copy(struct rpc_rqst *req,
			      struct xdr_stream *xdr,
			      struct nfs42_copy_args *args)
{
	struct compound_hdr hdr = {
		.minorversion = nfs4_xdr_minorversion(&args->seq_args),
	};

	encode_compound_hdr(xdr, req, &hdr);
	encode_sequence(xdr, &args->seq_args, &hdr);
	encode_putfh(xdr, args->src_fh, &hdr);
	encode_savefh(xdr, &hdr);
	encode_putfh(xdr, args->dst_fh, &hdr);
	encode_copy(xdr, args, &hdr);
	encode_nops(&hdr);
}

/*
 * Encode DEALLOCATE request
 */
static void nfs4_xdr_enc_deallocate(struct rpc_rqst *req,
				    struct xdr_stream *xdr,
				    struct nfs42_falloc_args *args)
{
	struct compound_hdr hdr = {
		.minorversion = nfs4_xdr_minorversion(&args->seq_args),
	};

	encode_compound_hdr(xdr, req, &hdr);
	encode_sequence(xdr, &args->seq_args, &hdr);
	encode_putfh(xdr, args->falloc_fh, &hdr);
	encode_deallocate(xdr, args, &hdr);
	encode_getfattr(xdr, args->falloc_bitmask, &hdr);
	encode_nops(&hdr);
}

/*
 * Encode SEEK request
 */
static void nfs4_xdr_enc_seek(struct rpc_rqst *req,
			      struct xdr_stream *xdr,
			      struct nfs42_seek_args *args)
{
	struct compound_hdr hdr = {
		.minorversion = nfs4_xdr_minorversion(&args->seq_args),
	};

	encode_compound_hdr(xdr, req, &hdr);
	encode_sequence(xdr, &args->seq_args, &hdr);
	encode_putfh(xdr, args->sa_fh, &hdr);
	encode_seek(xdr, args, &hdr);
	encode_nops(&hdr);
}

/*
 * Encode LAYOUTSTATS request
 */
static void nfs4_xdr_enc_layoutstats(struct rpc_rqst *req,
				     struct xdr_stream *xdr,
				     struct nfs42_layoutstat_args *args)
{
	int i;

	struct compound_hdr hdr = {
		.minorversion = nfs4_xdr_minorversion(&args->seq_args),
	};

	encode_compound_hdr(xdr, req, &hdr);
	encode_sequence(xdr, &args->seq_args, &hdr);
	encode_putfh(xdr, args->fh, &hdr);
	WARN_ON(args->num_dev > PNFS_LAYOUTSTATS_MAXDEV);
	for (i = 0; i < args->num_dev; i++)
		encode_layoutstats(xdr, args, &args->devinfo[i], &hdr);
	encode_nops(&hdr);
}

/*
 * Encode CLONE request
 */
static void nfs4_xdr_enc_clone(struct rpc_rqst *req,
			       struct xdr_stream *xdr,
			       struct nfs42_clone_args *args)
{
	struct compound_hdr hdr = {
		.minorversion = nfs4_xdr_minorversion(&args->seq_args),
	};

	encode_compound_hdr(xdr, req, &hdr);
	encode_sequence(xdr, &args->seq_args, &hdr);
	encode_putfh(xdr, args->src_fh, &hdr);
	encode_savefh(xdr, &hdr);
	encode_putfh(xdr, args->dst_fh, &hdr);
	encode_clone(xdr, args, &hdr);
	encode_getfattr(xdr, args->dst_bitmask, &hdr);
	encode_nops(&hdr);
}

static int decode_allocate(struct xdr_stream *xdr, struct nfs42_falloc_res *res)
{
	return decode_op_hdr(xdr, OP_ALLOCATE);
}

static int decode_write_response(struct xdr_stream *xdr,
				 struct nfs42_write_res *res)
{
	__be32 *p;
	int stateids;

	p = xdr_inline_decode(xdr, 4 + 8 + 4);
	if (unlikely(!p))
		goto out_overflow;

	stateids = be32_to_cpup(p++);
	p = xdr_decode_hyper(p, &res->count);
	res->verifier.committed = be32_to_cpup(p);
	return decode_verifier(xdr, &res->verifier.verifier);

out_overflow:
	print_overflow_msg(__func__, xdr);
	return -EIO;
}

static int decode_copy_requirements(struct xdr_stream *xdr,
				    struct nfs42_copy_res *res) {
	__be32 *p;

	p = xdr_inline_decode(xdr, 4 + 4);
	if (unlikely(!p))
		goto out_overflow;

	res->consecutive = be32_to_cpup(p++);
	res->synchronous = be32_to_cpup(p++);
	return 0;
out_overflow:
	print_overflow_msg(__func__, xdr);
	return -EIO;
}

static int decode_copy(struct xdr_stream *xdr, struct nfs42_copy_res *res)
{
	int status;

	status = decode_op_hdr(xdr, OP_COPY);
	if (status == NFS4ERR_OFFLOAD_NO_REQS) {
		status = decode_copy_requirements(xdr, res);
		if (status)
			return status;
		return NFS4ERR_OFFLOAD_NO_REQS;
	} else if (status)
		return status;

	status = decode_write_response(xdr, &res->write_res);
	if (status)
		return status;

	return decode_copy_requirements(xdr, res);
}

static int decode_deallocate(struct xdr_stream *xdr, struct nfs42_falloc_res *res)
{
	return decode_op_hdr(xdr, OP_DEALLOCATE);
}

static int decode_seek(struct xdr_stream *xdr, struct nfs42_seek_res *res)
{
	int status;
	__be32 *p;

	status = decode_op_hdr(xdr, OP_SEEK);
	if (status)
		return status;

	p = xdr_inline_decode(xdr, 4 + 8);
	if (unlikely(!p))
		goto out_overflow;

	res->sr_eof = be32_to_cpup(p++);
	p = xdr_decode_hyper(p, &res->sr_offset);
	return 0;

out_overflow:
	print_overflow_msg(__func__, xdr);
	return -EIO;
}

static int decode_layoutstats(struct xdr_stream *xdr)
{
	return decode_op_hdr(xdr, OP_LAYOUTSTATS);
}

static int decode_clone(struct xdr_stream *xdr)
{
	return decode_op_hdr(xdr, OP_CLONE);
}

/*
 * Decode ALLOCATE request
 */
static int nfs4_xdr_dec_allocate(struct rpc_rqst *rqstp,
				 struct xdr_stream *xdr,
				 struct nfs42_falloc_res *res)
{
	struct compound_hdr hdr;
	int status;

	status = decode_compound_hdr(xdr, &hdr);
	if (status)
		goto out;
	status = decode_sequence(xdr, &res->seq_res, rqstp);
	if (status)
		goto out;
	status = decode_putfh(xdr);
	if (status)
		goto out;
	status = decode_allocate(xdr, res);
	if (status)
		goto out;
	decode_getfattr(xdr, res->falloc_fattr, res->falloc_server);
out:
	return status;
}

/*
 * Decode COPY response
 */
static int nfs4_xdr_dec_copy(struct rpc_rqst *rqstp,
			     struct xdr_stream *xdr,
			     struct nfs42_copy_res *res)
{
	struct compound_hdr hdr;
	int status;

	status = decode_compound_hdr(xdr, &hdr);
	if (status)
		goto out;
	status = decode_sequence(xdr, &res->seq_res, rqstp);
	if (status)
		goto out;
	status = decode_putfh(xdr);
	if (status)
		goto out;
	status = decode_savefh(xdr);
	if (status)
		goto out;
	status = decode_putfh(xdr);
	if (status)
		goto out;
	status = decode_copy(xdr, res);
out:
	return status;
}

/*
 * Decode DEALLOCATE request
 */
static int nfs4_xdr_dec_deallocate(struct rpc_rqst *rqstp,
				   struct xdr_stream *xdr,
				   struct nfs42_falloc_res *res)
{
	struct compound_hdr hdr;
	int status;

	status = decode_compound_hdr(xdr, &hdr);
	if (status)
		goto out;
	status = decode_sequence(xdr, &res->seq_res, rqstp);
	if (status)
		goto out;
	status = decode_putfh(xdr);
	if (status)
		goto out;
	status = decode_deallocate(xdr, res);
	if (status)
		goto out;
	decode_getfattr(xdr, res->falloc_fattr, res->falloc_server);
out:
	return status;
}

/*
 * Decode SEEK request
 */
static int nfs4_xdr_dec_seek(struct rpc_rqst *rqstp,
			     struct xdr_stream *xdr,
			     struct nfs42_seek_res *res)
{
	struct compound_hdr hdr;
	int status;

	status = decode_compound_hdr(xdr, &hdr);
	if (status)
		goto out;
	status = decode_sequence(xdr, &res->seq_res, rqstp);
	if (status)
		goto out;
	status = decode_putfh(xdr);
	if (status)
		goto out;
	status = decode_seek(xdr, res);
out:
	return status;
}

/*
 * Decode LAYOUTSTATS request
 */
static int nfs4_xdr_dec_layoutstats(struct rpc_rqst *rqstp,
				    struct xdr_stream *xdr,
				    struct nfs42_layoutstat_res *res)
{
	struct compound_hdr hdr;
	int status, i;

	status = decode_compound_hdr(xdr, &hdr);
	if (status)
		goto out;
	status = decode_sequence(xdr, &res->seq_res, rqstp);
	if (status)
		goto out;
	status = decode_putfh(xdr);
	if (status)
		goto out;
	WARN_ON(res->num_dev > PNFS_LAYOUTSTATS_MAXDEV);
	for (i = 0; i < res->num_dev; i++) {
		status = decode_layoutstats(xdr);
		if (status)
			goto out;
	}
out:
	res->rpc_status = status;
	return status;
}

/*
 * Decode CLONE request
 */
static int nfs4_xdr_dec_clone(struct rpc_rqst *rqstp,
			      struct xdr_stream *xdr,
			      struct nfs42_clone_res *res)
{
	struct compound_hdr hdr;
	int status;

	status = decode_compound_hdr(xdr, &hdr);
	if (status)
		goto out;
	status = decode_sequence(xdr, &res->seq_res, rqstp);
	if (status)
		goto out;
	status = decode_putfh(xdr);
	if (status)
		goto out;
	status = decode_savefh(xdr);
	if (status)
		goto out;
	status = decode_putfh(xdr);
	if (status)
		goto out;
	status = decode_clone(xdr);
	if (status)
		goto out;
	status = decode_getfattr(xdr, res->dst_fattr, res->server);

out:
	res->rpc_status = status;
	return status;
}

#endif /* __LINUX_FS_NFS_NFS4_2XDR_H */
Commit	Line	Data
1c6dcbe5 AS	1	/*
	2	* Copyright (c) 2014 Anna Schumaker <Anna.Schumaker@Netapp.com>
	3	*/
	4	#ifndef __LINUX_FS_NFS_NFS4_2XDR_H
	5	#define __LINUX_FS_NFS_NFS4_2XDR_H
	6
be3a5d23 TM	7	#include "nfs42.h"
be3a5d23 TM	8
f4ac1674 AS	9	#define encode_fallocate_maxsz (encode_stateid_maxsz + \
	10	2 /* offset */ + \
	11	2 /* length */)
2e72448b AS	12	#define NFS42_WRITE_RES_SIZE (1 /* wr_callback_id size */ +\
	13	XDR_QUADLEN(NFS4_STATEID_SIZE) + \
	14	2 /* wr_count */ + \
	15	1 /* wr_committed */ + \
	16	XDR_QUADLEN(NFS4_VERIFIER_SIZE))
f4ac1674 AS	17	#define encode_allocate_maxsz (op_encode_hdr_maxsz + \
	18	encode_fallocate_maxsz)
	19	#define decode_allocate_maxsz (op_decode_hdr_maxsz)
2e72448b AS	20	#define encode_copy_maxsz (op_encode_hdr_maxsz + \
	21	XDR_QUADLEN(NFS4_STATEID_SIZE) + \
	22	XDR_QUADLEN(NFS4_STATEID_SIZE) + \
	23	2 + 2 + 2 + 1 + 1 + 1)
	24	#define decode_copy_maxsz (op_decode_hdr_maxsz + \
	25	NFS42_WRITE_RES_SIZE + \
	26	1 /* cr_consecutive */ + \
	27	1 /* cr_synchronous */)
624bd5b7 AS	28	#define encode_deallocate_maxsz (op_encode_hdr_maxsz + \
	29	encode_fallocate_maxsz)
	30	#define decode_deallocate_maxsz (op_decode_hdr_maxsz)
1c6dcbe5 AS	31	#define encode_seek_maxsz (op_encode_hdr_maxsz + \
	32	encode_stateid_maxsz + \
	33	2 /* offset */ + \
	34	1 /* whence */)
	35	#define decode_seek_maxsz (op_decode_hdr_maxsz + \
	36	1 /* eof */ + \
	37	1 /* whence */ + \
	38	2 /* offset */ + \
	39	2 /* length */)
be3a5d23 TM	40	#define encode_io_info_maxsz 4
	41	#define encode_layoutstats_maxsz (op_decode_hdr_maxsz + \
	42	2 /* offset */ + \
	43	2 /* length */ + \
	44	encode_stateid_maxsz + \
	45	encode_io_info_maxsz + \
	46	encode_io_info_maxsz + \
	47	1 /* opaque devaddr4 length */ + \
	48	XDR_QUADLEN(PNFS_LAYOUTSTATS_MAXSIZE))
	49	#define decode_layoutstats_maxsz (op_decode_hdr_maxsz)
36022770 PT	50	#define encode_clone_maxsz (encode_stateid_maxsz + \
	51	encode_stateid_maxsz + \
	52	2 /* src offset */ + \
	53	2 /* dst offset */ + \
	54	2 /* count */)
	55	#define decode_clone_maxsz (op_decode_hdr_maxsz)
1c6dcbe5	56
f4ac1674 AS	57	#define NFS4_enc_allocate_sz (compound_encode_hdr_maxsz + \
f4ac1674 AS	58	encode_putfh_maxsz + \
9a51940b AS	59	encode_allocate_maxsz + \
9a51940b AS	60	encode_getattr_maxsz)
f4ac1674 AS	61	#define NFS4_dec_allocate_sz (compound_decode_hdr_maxsz + \
f4ac1674 AS	62	decode_putfh_maxsz + \
9a51940b AS	63	decode_allocate_maxsz + \
9a51940b AS	64	decode_getattr_maxsz)
2e72448b AS	65	#define NFS4_enc_copy_sz (compound_encode_hdr_maxsz + \
	66	encode_putfh_maxsz + \
	67	encode_savefh_maxsz + \
	68	encode_putfh_maxsz + \
	69	encode_copy_maxsz)
	70	#define NFS4_dec_copy_sz (compound_decode_hdr_maxsz + \
	71	decode_putfh_maxsz + \
	72	decode_savefh_maxsz + \
	73	decode_putfh_maxsz + \
	74	decode_copy_maxsz)
624bd5b7 AS	75	#define NFS4_enc_deallocate_sz (compound_encode_hdr_maxsz + \
624bd5b7 AS	76	encode_putfh_maxsz + \
9a51940b AS	77	encode_deallocate_maxsz + \
9a51940b AS	78	encode_getattr_maxsz)
624bd5b7 AS	79	#define NFS4_dec_deallocate_sz (compound_decode_hdr_maxsz + \
624bd5b7 AS	80	decode_putfh_maxsz + \
9a51940b AS	81	decode_deallocate_maxsz + \
9a51940b AS	82	decode_getattr_maxsz)
1c6dcbe5 AS	83	#define NFS4_enc_seek_sz (compound_encode_hdr_maxsz + \
	84	encode_putfh_maxsz + \
	85	encode_seek_maxsz)
	86	#define NFS4_dec_seek_sz (compound_decode_hdr_maxsz + \
	87	decode_putfh_maxsz + \
	88	decode_seek_maxsz)
be3a5d23 TM	89	#define NFS4_enc_layoutstats_sz (compound_encode_hdr_maxsz + \
	90	encode_sequence_maxsz + \
	91	encode_putfh_maxsz + \
	92	PNFS_LAYOUTSTATS_MAXDEV * encode_layoutstats_maxsz)
	93	#define NFS4_dec_layoutstats_sz (compound_decode_hdr_maxsz + \
	94	decode_sequence_maxsz + \
	95	decode_putfh_maxsz + \
	96	PNFS_LAYOUTSTATS_MAXDEV * decode_layoutstats_maxsz)
36022770 PT	97	#define NFS4_enc_clone_sz (compound_encode_hdr_maxsz + \
	98	encode_sequence_maxsz + \
	99	encode_putfh_maxsz + \
	100	encode_savefh_maxsz + \
	101	encode_putfh_maxsz + \
	102	encode_clone_maxsz + \
	103	encode_getattr_maxsz)
	104	#define NFS4_dec_clone_sz (compound_decode_hdr_maxsz + \
	105	decode_sequence_maxsz + \
	106	decode_putfh_maxsz + \
	107	decode_savefh_maxsz + \
	108	decode_putfh_maxsz + \
	109	decode_clone_maxsz + \
	110	decode_getattr_maxsz)
1c6dcbe5	111
f4ac1674 AS	112	static void encode_fallocate(struct xdr_stream *xdr,
	113	struct nfs42_falloc_args *args)
	114	{
	115	encode_nfs4_stateid(xdr, &args->falloc_stateid);
	116	encode_uint64(xdr, args->falloc_offset);
	117	encode_uint64(xdr, args->falloc_length);
	118	}
	119
	120	static void encode_allocate(struct xdr_stream *xdr,
	121	struct nfs42_falloc_args *args,
	122	struct compound_hdr *hdr)
	123	{
	124	encode_op_hdr(xdr, OP_ALLOCATE, decode_allocate_maxsz, hdr);
	125	encode_fallocate(xdr, args);
	126	}
	127
2e72448b AS	128	static void encode_copy(struct xdr_stream *xdr,
	129	struct nfs42_copy_args *args,
	130	struct compound_hdr *hdr)
	131	{
	132	encode_op_hdr(xdr, OP_COPY, decode_copy_maxsz, hdr);
	133	encode_nfs4_stateid(xdr, &args->src_stateid);
	134	encode_nfs4_stateid(xdr, &args->dst_stateid);
	135
	136	encode_uint64(xdr, args->src_pos);
	137	encode_uint64(xdr, args->dst_pos);
	138	encode_uint64(xdr, args->count);
	139
	140	encode_uint32(xdr, 1); /* consecutive = true */
	141	encode_uint32(xdr, 1); /* synchronous = true */
	142	encode_uint32(xdr, 0); /* src server list */
	143	}
	144
624bd5b7 AS	145	static void encode_deallocate(struct xdr_stream *xdr,
	146	struct nfs42_falloc_args *args,
	147	struct compound_hdr *hdr)
	148	{
	149	encode_op_hdr(xdr, OP_DEALLOCATE, decode_deallocate_maxsz, hdr);
	150	encode_fallocate(xdr, args);
	151	}
	152
1c6dcbe5 AS	153	static void encode_seek(struct xdr_stream *xdr,
	154	struct nfs42_seek_args *args,
	155	struct compound_hdr *hdr)
	156	{
	157	encode_op_hdr(xdr, OP_SEEK, decode_seek_maxsz, hdr);
	158	encode_nfs4_stateid(xdr, &args->sa_stateid);
	159	encode_uint64(xdr, args->sa_offset);
	160	encode_uint32(xdr, args->sa_what);
	161	}
	162
be3a5d23 TM	163	static void encode_layoutstats(struct xdr_stream *xdr,
	164	struct nfs42_layoutstat_args *args,
	165	struct nfs42_layoutstat_devinfo *devinfo,
	166	struct compound_hdr *hdr)
	167	{
	168	__be32 *p;
	169
	170	encode_op_hdr(xdr, OP_LAYOUTSTATS, decode_layoutstats_maxsz, hdr);
	171	p = reserve_space(xdr, 8 + 8);
	172	p = xdr_encode_hyper(p, devinfo->offset);
	173	p = xdr_encode_hyper(p, devinfo->length);
	174	encode_nfs4_stateid(xdr, &args->stateid);
	175	p = reserve_space(xdr, 4*8 + NFS4_DEVICEID4_SIZE + 4);
	176	p = xdr_encode_hyper(p, devinfo->read_count);
	177	p = xdr_encode_hyper(p, devinfo->read_bytes);
	178	p = xdr_encode_hyper(p, devinfo->write_count);
	179	p = xdr_encode_hyper(p, devinfo->write_bytes);
	180	p = xdr_encode_opaque_fixed(p, devinfo->dev_id.data,
	181	NFS4_DEVICEID4_SIZE);
	182	/* Encode layoutupdate4 */
	183	*p++ = cpu_to_be32(devinfo->layout_type);
	184	if (devinfo->layoutstats_encode != NULL)
	185	devinfo->layoutstats_encode(xdr, args, devinfo);
	186	else
	187	encode_uint32(xdr, 0);
	188	}
	189
36022770 PT	190	static void encode_clone(struct xdr_stream *xdr,
	191	struct nfs42_clone_args *args,
	192	struct compound_hdr *hdr)
	193	{
	194	__be32 *p;
	195
	196	encode_op_hdr(xdr, OP_CLONE, decode_clone_maxsz, hdr);
	197	encode_nfs4_stateid(xdr, &args->src_stateid);
	198	encode_nfs4_stateid(xdr, &args->dst_stateid);
	199	p = reserve_space(xdr, 3*8);
	200	p = xdr_encode_hyper(p, args->src_offset);
	201	p = xdr_encode_hyper(p, args->dst_offset);
	202	xdr_encode_hyper(p, args->count);
	203	}
	204
f4ac1674 AS	205	/*
	206	* Encode ALLOCATE request
	207	*/
	208	static void nfs4_xdr_enc_allocate(struct rpc_rqst *req,
	209	struct xdr_stream *xdr,
	210	struct nfs42_falloc_args *args)
	211	{
	212	struct compound_hdr hdr = {
	213	.minorversion = nfs4_xdr_minorversion(&args->seq_args),
	214	};
	215
	216	encode_compound_hdr(xdr, req, &hdr);
	217	encode_sequence(xdr, &args->seq_args, &hdr);
	218	encode_putfh(xdr, args->falloc_fh, &hdr);
	219	encode_allocate(xdr, args, &hdr);
9a51940b	220	encode_getfattr(xdr, args->falloc_bitmask, &hdr);
f4ac1674 AS	221	encode_nops(&hdr);
	222	}
	223
2e72448b AS	224	/*
	225	* Encode COPY request
	226	*/
	227	static void nfs4_xdr_enc_copy(struct rpc_rqst *req,
	228	struct xdr_stream *xdr,
	229	struct nfs42_copy_args *args)
	230	{
	231	struct compound_hdr hdr = {
	232	.minorversion = nfs4_xdr_minorversion(&args->seq_args),
	233	};
	234
	235	encode_compound_hdr(xdr, req, &hdr);
	236	encode_sequence(xdr, &args->seq_args, &hdr);
	237	encode_putfh(xdr, args->src_fh, &hdr);
	238	encode_savefh(xdr, &hdr);
	239	encode_putfh(xdr, args->dst_fh, &hdr);
	240	encode_copy(xdr, args, &hdr);
	241	encode_nops(&hdr);
	242	}
	243
624bd5b7 AS	244	/*
	245	* Encode DEALLOCATE request
	246	*/
	247	static void nfs4_xdr_enc_deallocate(struct rpc_rqst *req,
	248	struct xdr_stream *xdr,
	249	struct nfs42_falloc_args *args)
	250	{
	251	struct compound_hdr hdr = {
	252	.minorversion = nfs4_xdr_minorversion(&args->seq_args),
	253	};
	254
	255	encode_compound_hdr(xdr, req, &hdr);
	256	encode_sequence(xdr, &args->seq_args, &hdr);
	257	encode_putfh(xdr, args->falloc_fh, &hdr);
	258	encode_deallocate(xdr, args, &hdr);
9a51940b	259	encode_getfattr(xdr, args->falloc_bitmask, &hdr);
624bd5b7 AS	260	encode_nops(&hdr);
	261	}
	262
1c6dcbe5 AS	263	/*
	264	* Encode SEEK request
	265	*/
	266	static void nfs4_xdr_enc_seek(struct rpc_rqst *req,
	267	struct xdr_stream *xdr,
	268	struct nfs42_seek_args *args)
	269	{
	270	struct compound_hdr hdr = {
	271	.minorversion = nfs4_xdr_minorversion(&args->seq_args),
	272	};
	273
	274	encode_compound_hdr(xdr, req, &hdr);
	275	encode_sequence(xdr, &args->seq_args, &hdr);
	276	encode_putfh(xdr, args->sa_fh, &hdr);
	277	encode_seek(xdr, args, &hdr);
	278	encode_nops(&hdr);
	279	}
	280
be3a5d23 TM	281	/*
	282	* Encode LAYOUTSTATS request
	283	*/
	284	static void nfs4_xdr_enc_layoutstats(struct rpc_rqst *req,
	285	struct xdr_stream *xdr,
	286	struct nfs42_layoutstat_args *args)
	287	{
	288	int i;
	289
	290	struct compound_hdr hdr = {
	291	.minorversion = nfs4_xdr_minorversion(&args->seq_args),
	292	};
	293
	294	encode_compound_hdr(xdr, req, &hdr);
	295	encode_sequence(xdr, &args->seq_args, &hdr);
	296	encode_putfh(xdr, args->fh, &hdr);
	297	WARN_ON(args->num_dev > PNFS_LAYOUTSTATS_MAXDEV);
	298	for (i = 0; i < args->num_dev; i++)
	299	encode_layoutstats(xdr, args, &args->devinfo[i], &hdr);
	300	encode_nops(&hdr);
	301	}
	302
36022770 PT	303	/*
	304	* Encode CLONE request
	305	*/
	306	static void nfs4_xdr_enc_clone(struct rpc_rqst *req,
	307	struct xdr_stream *xdr,
	308	struct nfs42_clone_args *args)
	309	{
	310	struct compound_hdr hdr = {
	311	.minorversion = nfs4_xdr_minorversion(&args->seq_args),
	312	};
	313
	314	encode_compound_hdr(xdr, req, &hdr);
	315	encode_sequence(xdr, &args->seq_args, &hdr);
	316	encode_putfh(xdr, args->src_fh, &hdr);
	317	encode_savefh(xdr, &hdr);
	318	encode_putfh(xdr, args->dst_fh, &hdr);
	319	encode_clone(xdr, args, &hdr);
	320	encode_getfattr(xdr, args->dst_bitmask, &hdr);
	321	encode_nops(&hdr);
	322	}
	323
f4ac1674 AS	324	static int decode_allocate(struct xdr_stream xdr, struct nfs42_falloc_res res)
	325	{
	326	return decode_op_hdr(xdr, OP_ALLOCATE);
	327	}
	328
2e72448b AS	329	static int decode_write_response(struct xdr_stream *xdr,
	330	struct nfs42_write_res *res)
	331	{
	332	__be32 *p;
	333	int stateids;
	334
	335	p = xdr_inline_decode(xdr, 4 + 8 + 4);
	336	if (unlikely(!p))
	337	goto out_overflow;
	338
	339	stateids = be32_to_cpup(p++);
	340	p = xdr_decode_hyper(p, &res->count);
	341	res->verifier.committed = be32_to_cpup(p);
	342	return decode_verifier(xdr, &res->verifier.verifier);
	343
	344	out_overflow:
	345	print_overflow_msg(__func__, xdr);
	346	return -EIO;
	347	}
	348
	349	static int decode_copy_requirements(struct xdr_stream *xdr,
	350	struct nfs42_copy_res *res) {
	351	__be32 *p;
	352
	353	p = xdr_inline_decode(xdr, 4 + 4);
	354	if (unlikely(!p))
	355	goto out_overflow;
	356
	357	res->consecutive = be32_to_cpup(p++);
	358	res->synchronous = be32_to_cpup(p++);
	359	return 0;
	360	out_overflow:
	361	print_overflow_msg(__func__, xdr);
	362	return -EIO;
	363	}
	364
	365	static int decode_copy(struct xdr_stream xdr, struct nfs42_copy_res res)
	366	{
	367	int status;
	368
	369	status = decode_op_hdr(xdr, OP_COPY);
	370	if (status == NFS4ERR_OFFLOAD_NO_REQS) {
	371	status = decode_copy_requirements(xdr, res);
	372	if (status)
	373	return status;
	374	return NFS4ERR_OFFLOAD_NO_REQS;
	375	} else if (status)
	376	return status;
	377
	378	status = decode_write_response(xdr, &res->write_res);
	379	if (status)
	380	return status;
	381
	382	return decode_copy_requirements(xdr, res);
	383	}
	384
624bd5b7 AS	385	static int decode_deallocate(struct xdr_stream xdr, struct nfs42_falloc_res res)
	386	{
	387	return decode_op_hdr(xdr, OP_DEALLOCATE);
	388	}
	389
1c6dcbe5 AS	390	static int decode_seek(struct xdr_stream xdr, struct nfs42_seek_res res)
	391	{
	392	int status;
	393	__be32 *p;
	394
	395	status = decode_op_hdr(xdr, OP_SEEK);
	396	if (status)
	397	return status;
	398
	399	p = xdr_inline_decode(xdr, 4 + 8);
	400	if (unlikely(!p))
	401	goto out_overflow;
	402
	403	res->sr_eof = be32_to_cpup(p++);
	404	p = xdr_decode_hyper(p, &res->sr_offset);
	405	return 0;
	406
	407	out_overflow:
	408	print_overflow_msg(__func__, xdr);
	409	return -EIO;
	410	}
	411
19cf6335	412	static int decode_layoutstats(struct xdr_stream *xdr)
be3a5d23	413	{
da2e8127	414	return decode_op_hdr(xdr, OP_LAYOUTSTATS);
be3a5d23 TM	415	}
be3a5d23 TM	416
36022770 PT	417	static int decode_clone(struct xdr_stream *xdr)
	418	{
	419	return decode_op_hdr(xdr, OP_CLONE);
	420	}
	421
f4ac1674 AS	422	/*
	423	* Decode ALLOCATE request
	424	*/
	425	static int nfs4_xdr_dec_allocate(struct rpc_rqst *rqstp,
	426	struct xdr_stream *xdr,
	427	struct nfs42_falloc_res *res)
	428	{
	429	struct compound_hdr hdr;
	430	int status;
	431
	432	status = decode_compound_hdr(xdr, &hdr);
	433	if (status)
	434	goto out;
	435	status = decode_sequence(xdr, &res->seq_res, rqstp);
	436	if (status)
	437	goto out;
	438	status = decode_putfh(xdr);
	439	if (status)
	440	goto out;
	441	status = decode_allocate(xdr, res);
9a51940b AS	442	if (status)
	443	goto out;
	444	decode_getfattr(xdr, res->falloc_fattr, res->falloc_server);
f4ac1674 AS	445	out:
	446	return status;
	447	}
	448
2e72448b AS	449	/*
	450	* Decode COPY response
	451	*/
	452	static int nfs4_xdr_dec_copy(struct rpc_rqst *rqstp,
	453	struct xdr_stream *xdr,
	454	struct nfs42_copy_res *res)
	455	{
	456	struct compound_hdr hdr;
	457	int status;
	458
	459	status = decode_compound_hdr(xdr, &hdr);
	460	if (status)
	461	goto out;
	462	status = decode_sequence(xdr, &res->seq_res, rqstp);
	463	if (status)
	464	goto out;
	465	status = decode_putfh(xdr);
	466	if (status)
	467	goto out;
	468	status = decode_savefh(xdr);
	469	if (status)
	470	goto out;
	471	status = decode_putfh(xdr);
	472	if (status)
	473	goto out;
	474	status = decode_copy(xdr, res);
	475	out:
	476	return status;
	477	}
	478
624bd5b7 AS	479	/*
	480	* Decode DEALLOCATE request
	481	*/
	482	static int nfs4_xdr_dec_deallocate(struct rpc_rqst *rqstp,
	483	struct xdr_stream *xdr,
	484	struct nfs42_falloc_res *res)
	485	{
	486	struct compound_hdr hdr;
	487	int status;
	488
	489	status = decode_compound_hdr(xdr, &hdr);
	490	if (status)
	491	goto out;
	492	status = decode_sequence(xdr, &res->seq_res, rqstp);
	493	if (status)
	494	goto out;
	495	status = decode_putfh(xdr);
	496	if (status)
	497	goto out;
	498	status = decode_deallocate(xdr, res);
9a51940b AS	499	if (status)
	500	goto out;
	501	decode_getfattr(xdr, res->falloc_fattr, res->falloc_server);
624bd5b7 AS	502	out:
	503	return status;
	504	}
	505
1c6dcbe5 AS	506	/*
	507	* Decode SEEK request
	508	*/
	509	static int nfs4_xdr_dec_seek(struct rpc_rqst *rqstp,
	510	struct xdr_stream *xdr,
	511	struct nfs42_seek_res *res)
	512	{
	513	struct compound_hdr hdr;
	514	int status;
	515
	516	status = decode_compound_hdr(xdr, &hdr);
	517	if (status)
	518	goto out;
	519	status = decode_sequence(xdr, &res->seq_res, rqstp);
	520	if (status)
	521	goto out;
	522	status = decode_putfh(xdr);
	523	if (status)
	524	goto out;
	525	status = decode_seek(xdr, res);
	526	out:
	527	return status;
	528	}
be3a5d23 TM	529
	530	/*
	531	* Decode LAYOUTSTATS request
	532	*/
	533	static int nfs4_xdr_dec_layoutstats(struct rpc_rqst *rqstp,
	534	struct xdr_stream *xdr,
	535	struct nfs42_layoutstat_res *res)
	536	{
	537	struct compound_hdr hdr;
	538	int status, i;
	539
	540	status = decode_compound_hdr(xdr, &hdr);
	541	if (status)
	542	goto out;
	543	status = decode_sequence(xdr, &res->seq_res, rqstp);
	544	if (status)
	545	goto out;
	546	status = decode_putfh(xdr);
	547	if (status)
	548	goto out;
	549	WARN_ON(res->num_dev > PNFS_LAYOUTSTATS_MAXDEV);
	550	for (i = 0; i < res->num_dev; i++) {
19cf6335	551	status = decode_layoutstats(xdr);
be3a5d23 TM	552	if (status)
	553	goto out;
	554	}
	555	out:
	556	res->rpc_status = status;
	557	return status;
	558	}
	559
36022770 PT	560	/*
	561	* Decode CLONE request
	562	*/
	563	static int nfs4_xdr_dec_clone(struct rpc_rqst *rqstp,
	564	struct xdr_stream *xdr,
	565	struct nfs42_clone_res *res)
	566	{
	567	struct compound_hdr hdr;
	568	int status;
	569
	570	status = decode_compound_hdr(xdr, &hdr);
	571	if (status)
	572	goto out;
	573	status = decode_sequence(xdr, &res->seq_res, rqstp);
	574	if (status)
	575	goto out;
	576	status = decode_putfh(xdr);
	577	if (status)
	578	goto out;
	579	status = decode_savefh(xdr);
	580	if (status)
	581	goto out;
	582	status = decode_putfh(xdr);
	583	if (status)
	584	goto out;
	585	status = decode_clone(xdr);
	586	if (status)
	587	goto out;
	588	status = decode_getfattr(xdr, res->dst_fattr, res->server);
	589
	590	out:
	591	res->rpc_status = status;
	592	return status;
	593	}
	594
1c6dcbe5	595	#endif /* __LINUX_FS_NFS_NFS4_2XDR_H */