Signed-off-by: Olga Kornievskaia <kolga@xxxxxxxxxx>
---
fs/nfs/nfs42xdr.c | 87 +++++++++++++++++++++++++++++++++++++++++++++++
fs/nfs/nfs4proc.c | 1 +
fs/nfs/nfs4xdr.c | 1 +
include/linux/nfs4.h | 1 +
include/linux/nfs_fs_sb.h | 1 +
include/linux/nfs_xdr.h | 12 +++++++
6 files changed, 103 insertions(+)
diff --git a/fs/nfs/nfs42xdr.c b/fs/nfs/nfs42xdr.c
index 528362f..e369de1 100644
--- a/fs/nfs/nfs42xdr.c
+++ b/fs/nfs/nfs42xdr.c
@@ -25,6 +25,11 @@
NFS42_WRITE_RES_SIZE + \
1 /* cr_consecutive */ + \
1 /* cr_synchronous */)
+#define encode_offload_status_maxsz (op_encode_hdr_maxsz + \
+ XDR_QUADLEN(NFS4_STATEID_SIZE))
+#define decode_offload_status_maxsz (op_decode_hdr_maxsz + \
+ 2 /* osr_count */ + \
+ 1 + 1 /* osr_complete<1> */)
#define encode_deallocate_maxsz (op_encode_hdr_maxsz + \
encode_fallocate_maxsz)
#define decode_deallocate_maxsz (op_decode_hdr_maxsz)
@@ -74,6 +79,12 @@
decode_putfh_maxsz + \
decode_copy_maxsz + \
decode_commit_maxsz)
+#define NFS4_enc_offload_status_sz (compound_encode_hdr_maxsz + \
+ encode_putfh_maxsz + \
+ encode_offload_status_maxsz)
+#define NFS4_dec_offload_status_sz (compound_decode_hdr_maxsz + \
+ decode_putfh_maxsz + \
+ decode_offload_status_maxsz)
#define NFS4_enc_deallocate_sz (compound_encode_hdr_maxsz + \
encode_putfh_maxsz + \
encode_deallocate_maxsz + \
@@ -144,6 +155,14 @@ static void encode_copy(struct xdr_stream *xdr,
encode_uint32(xdr, 0); /* src server list */
}
+static void encode_offload_status(struct xdr_stream *xdr,
+ struct nfs42_offload_status_args *args,
+ struct compound_hdr *hdr)
+{
+ encode_op_hdr(xdr, OP_OFFLOAD_STATUS, decode_offload_status_maxsz, hdr);
+ encode_nfs4_stateid(xdr, &args->osa_stateid);
+}
+
static void encode_deallocate(struct xdr_stream *xdr,
struct nfs42_falloc_args *args,
struct compound_hdr *hdr)
@@ -258,6 +277,24 @@ static void nfs4_xdr_enc_copy(struct rpc_rqst *req,
}
/*
+ * Encode OFFLOAD_STATUS request
+ */
+static void nfs4_xdr_enc_offload_status(struct rpc_rqst *req,
+ struct xdr_stream *xdr,
+ struct nfs42_offload_status_args *args)
+{
+ struct compound_hdr hdr = {
+ .minorversion = nfs4_xdr_minorversion(&args->osa_seq_args),
+ };
+
+ encode_compound_hdr(xdr, req, &hdr);
+ encode_sequence(xdr, &args->osa_seq_args, &hdr);
+ encode_putfh(xdr, args->osa_src_fh, &hdr);
+ encode_offload_status(xdr, args, &hdr);
+ encode_nops(&hdr);
+}
+
+/*
* Encode DEALLOCATE request
*/
static void nfs4_xdr_enc_deallocate(struct rpc_rqst *req,
@@ -406,6 +443,31 @@ static int decode_copy(struct xdr_stream *xdr, struct nfs42_copy_res *res)
return decode_copy_requirements(xdr, res);
}
+static int decode_offload_status(struct xdr_stream *xdr,
+ struct nfs42_offload_status_res *res)
+{
+ __be32 *p;
+ uint32_t count;
+ int status;
+
+ status = decode_op_hdr(xdr, OP_OFFLOAD_STATUS);
+ if (status)
+ return status;
+ p = xdr_inline_decode(xdr, 8 + 4);
+ if (unlikely(!p))
+ goto out_overflow;
+ p = xdr_decode_hyper(p, &res->osr_count);
+ count = be32_to_cpup(p++);
+ if (count) {
+ p = xdr_inline_decode(xdr, 4);
+ res->osr_status = nfs4_stat_to_errno(be32_to_cpup(p));
+ }
+ return 0;
+out_overflow:
+ print_overflow_msg(__func__, xdr);
+ return -EIO;
+}
+
static int decode_deallocate(struct xdr_stream *xdr, struct nfs42_falloc_res *res)
{
return decode_op_hdr(xdr, OP_DEALLOCATE);
@@ -504,6 +566,31 @@ static int nfs4_xdr_dec_copy(struct rpc_rqst *rqstp,
}
/*
+ * Decode OFFLOAD_STATUS response
+ */
+static int nfs4_xdr_dec_offload_status(struct rpc_rqst *rqstp,
+ struct xdr_stream *xdr,
+ struct nfs42_offload_status_res *res)
+{
+ struct compound_hdr hdr;
+ int status;
+
+ status = decode_compound_hdr(xdr, &hdr);
+ if (status)
+ goto out;
+ status = decode_sequence(xdr, &res->osr_seq_res, rqstp);
+ if (status)
+ goto out;
+ status = decode_putfh(xdr);
+ if (status)
+ goto out;
+ status = decode_offload_status(xdr, res);
+
+out:
+ return status;
+}
+
+/*
* Decode DEALLOCATE request
*/
static int nfs4_xdr_dec_deallocate(struct rpc_rqst *rqstp,
diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c
index dbfa189..90be5c1 100644
--- a/fs/nfs/nfs4proc.c
+++ b/fs/nfs/nfs4proc.c
@@ -9229,6 +9229,7 @@ static bool nfs4_match_stateid(const nfs4_stateid *s1,
| NFS_CAP_ATOMIC_OPEN_V1
| NFS_CAP_ALLOCATE
| NFS_CAP_COPY
+ | NFS_CAP_OFFLOAD_STATUS
| NFS_CAP_DEALLOCATE
| NFS_CAP_SEEK
| NFS_CAP_LAYOUTSTATS
diff --git a/fs/nfs/nfs4xdr.c b/fs/nfs/nfs4xdr.c
index 3aebfdc..8b41f43 100644
--- a/fs/nfs/nfs4xdr.c
+++ b/fs/nfs/nfs4xdr.c
@@ -7561,6 +7561,7 @@ struct rpc_procinfo nfs4_procedures[] = {
PROC(LAYOUTSTATS, enc_layoutstats, dec_layoutstats),
PROC(CLONE, enc_clone, dec_clone),
PROC(COPY, enc_copy, dec_copy),
+ PROC(OFFLOAD_STATUS, enc_offload_status, dec_offload_status),
#endif /* CONFIG_NFS_V4_2 */
};
diff --git a/include/linux/nfs4.h b/include/linux/nfs4.h
index 1b1ca04..d67c350 100644
--- a/include/linux/nfs4.h
+++ b/include/linux/nfs4.h
@@ -523,6 +523,7 @@ enum {
NFSPROC4_CLNT_LAYOUTSTATS,
NFSPROC4_CLNT_CLONE,
NFSPROC4_CLNT_COPY,
+ NFSPROC4_CLNT_OFFLOAD_STATUS,
};
/* nfs41 types */
diff --git a/include/linux/nfs_fs_sb.h b/include/linux/nfs_fs_sb.h
index e418a10..36535ad 100644
--- a/include/linux/nfs_fs_sb.h
+++ b/include/linux/nfs_fs_sb.h
@@ -250,5 +250,6 @@ struct nfs_server {
#define NFS_CAP_LAYOUTSTATS (1U << 22)
#define NFS_CAP_CLONE (1U << 23)
#define NFS_CAP_COPY (1U << 24)
+#define NFS_CAP_OFFLOAD_STATUS (1U << 25)
#endif
diff --git a/include/linux/nfs_xdr.h b/include/linux/nfs_xdr.h
index b28c834..eaaf540 100644
--- a/include/linux/nfs_xdr.h
+++ b/include/linux/nfs_xdr.h
@@ -1386,6 +1386,18 @@ struct nfs42_copy_res {
struct nfs_commitres commit_res;
};
+struct nfs42_offload_status_args {
+ struct nfs4_sequence_args osa_seq_args;
+ struct nfs_fh *osa_src_fh;
+ nfs4_stateid osa_stateid;
+};
+
+struct nfs42_offload_status_res {
+ struct nfs4_sequence_res osr_seq_res;
+ uint64_t osr_count;
+ int osr_status;
+};
+
struct nfs42_seek_args {
struct nfs4_sequence_args seq_args;
--
1.8.3.1
--
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