XDR encoding and decoding for RECLAIM_COMPLETE. Implements the necessary
encoding to indicate reclaim complete for the entire client. In the future,
it can be extended to provide reclaim complete functionality for a single
file system after migration.
Signed-off-by: Ricardo Labiaga <Ricardo.Labiaga@xxxxxxxxxx>
---
fs/nfs/nfs4xdr.c | 66 +++++++++++++++++++++++++++++++++++++++++++++++
include/linux/nfs4.h | 1 +
include/linux/nfs_xdr.h | 10 +++++++
3 files changed, 77 insertions(+), 0 deletions(-)
diff --git a/fs/nfs/nfs4xdr.c b/fs/nfs/nfs4xdr.c
index 1969ba4..ee0a15b 100644
--- a/fs/nfs/nfs4xdr.c
+++ b/fs/nfs/nfs4xdr.c
@@ -299,6 +299,8 @@ static int nfs4_stat_to_errno(int);
XDR_QUADLEN(NFS4_MAX_SESSIONID_LEN) + 4)
#define decode_sequence_maxsz (op_decode_hdr_maxsz + \
XDR_QUADLEN(NFS4_MAX_SESSIONID_LEN) + 5)
+#define encode_reclaim_complete_maxsz (op_encode_hdr_maxsz + 4)
+#define decode_reclaim_complete_maxsz (op_decode_hdr_maxsz + 4)
#else /* CONFIG_NFS_V4_1 */
#define encode_sequence_maxsz 0
#define decode_sequence_maxsz 0
@@ -676,6 +678,12 @@ static int nfs4_stat_to_errno(int);
decode_sequence_maxsz + \
decode_putrootfh_maxsz + \
decode_fsinfo_maxsz)
+#define NFS4_enc_reclaim_complete_sz (compound_encode_hdr_maxsz + \
+ encode_sequence_maxsz + \
+ encode_reclaim_complete_maxsz)
+#define NFS4_dec_reclaim_complete_sz (compound_decode_hdr_maxsz + \
+ decode_sequence_maxsz + \
+ decode_reclaim_complete_maxsz)
#endif /* CONFIG_NFS_V4_1 */
static const umode_t nfs_type2fmt[] = {
@@ -1592,6 +1600,19 @@ static void encode_destroy_session(struct xdr_stream *xdr,
hdr->nops++;
hdr->replen += decode_destroy_session_maxsz;
}
+
+static void encode_reclaim_complete(struct xdr_stream *xdr,
+ struct nfs41_reclaim_complete_args *args,
+ struct compound_hdr *hdr)
+{
+ __be32 *p;
+
+ p = reserve_space(xdr, 8);
+ *p++ = cpu_to_be32(OP_RECLAIM_COMPLETE);
+ *p++ = cpu_to_be32(args->one_fs);
+ hdr->nops++;
+ hdr->replen += decode_reclaim_complete_maxsz;
+}
#endif /* CONFIG_NFS_V4_1 */
static void encode_sequence(struct xdr_stream *xdr,
@@ -2420,6 +2441,26 @@ static int nfs4_xdr_enc_get_lease_time(struct rpc_rqst *req, uint32_t *p,
encode_nops(&hdr);
return 0;
}
+
+/*
+ * a RECLAIM_COMPLETE request
+ */
+static int nfs4_xdr_enc_reclaim_complete(struct rpc_rqst *req, uint32_t *p,
+ struct nfs41_reclaim_complete_args *args)
+{
+ struct xdr_stream xdr;
+ struct compound_hdr hdr = {
+ .minorversion = nfs4_xdr_minorversion(&args->seq_args)
+ };
+
+ xdr_init_encode(&xdr, &req->rq_snd_buf, p);
+ encode_compound_hdr(&xdr, req, &hdr);
+ encode_sequence(&xdr, &args->seq_args, &hdr);
+ encode_reclaim_complete(&xdr, args, &hdr);
+ encode_nops(&hdr);
+ return 0;
+}
+
#endif /* CONFIG_NFS_V4_1 */
static void print_overflow_msg(const char *func, const struct xdr_stream *xdr)
@@ -4528,6 +4569,11 @@ static int decode_destroy_session(struct xdr_stream *xdr, void *dummy)
{
return decode_op_hdr(xdr, OP_DESTROY_SESSION);
}
+
+static int decode_reclaim_complete(struct xdr_stream *xdr, void *dummy)
+{
+ return decode_op_hdr(xdr, OP_RECLAIM_COMPLETE);
+}
#endif /* CONFIG_NFS_V4_1 */
static int decode_sequence(struct xdr_stream *xdr,
@@ -5591,6 +5637,25 @@ static int nfs4_xdr_dec_get_lease_time(struct rpc_rqst *rqstp, uint32_t *p,
status = decode_fsinfo(&xdr, res->lr_fsinfo);
return status;
}
+
+/*
+ * Decode RECLAIM_COMPLETE response
+ */
+static int nfs4_xdr_dec_reclaim_complete(struct rpc_rqst *rqstp, uint32_t *p,
+ struct nfs41_reclaim_complete_res *res)
+{
+ struct xdr_stream xdr;
+ struct compound_hdr hdr;
+ int status;
+
+ xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
+ status = decode_compound_hdr(&xdr, &hdr);
+ if (!status)
+ status = decode_sequence(&xdr, &res->seq_res, rqstp);
+ if (!status)
+ status = decode_reclaim_complete(&xdr, (void *)NULL);
+ return status;
+}
#endif /* CONFIG_NFS_V4_1 */
__be32 *nfs4_decode_dirent(__be32 *p, struct nfs_entry *entry, int plus)
@@ -5767,6 +5832,7 @@ struct rpc_procinfo nfs4_procedures[] = {
PROC(DESTROY_SESSION, enc_destroy_session, dec_destroy_session),
PROC(SEQUENCE, enc_sequence, dec_sequence),
PROC(GET_LEASE_TIME, enc_get_lease_time, dec_get_lease_time),
+ PROC(RECLAIM_COMPLETE, enc_reclaim_complete, dec_reclaim_complete),
#endif /* CONFIG_NFS_V4_1 */
};
diff --git a/include/linux/nfs4.h b/include/linux/nfs4.h
index c4c0602..f7bb8e0 100644
--- a/include/linux/nfs4.h
+++ b/include/linux/nfs4.h
@@ -528,6 +528,7 @@ enum {
NFSPROC4_CLNT_DESTROY_SESSION,
NFSPROC4_CLNT_SEQUENCE,
NFSPROC4_CLNT_GET_LEASE_TIME,
+ NFSPROC4_CLNT_RECLAIM_COMPLETE,
};
/* nfs41 types */
diff --git a/include/linux/nfs_xdr.h b/include/linux/nfs_xdr.h
index 62f63fb..1810d1f 100644
--- a/include/linux/nfs_xdr.h
+++ b/include/linux/nfs_xdr.h
@@ -938,6 +938,16 @@ struct nfs41_create_session_args {
struct nfs41_create_session_res {
struct nfs_client *client;
};
+
+struct nfs41_reclaim_complete_args {
+ /* In the future extend to include curr_fh for use with migration */
+ unsigned char one_fs:1;
+ struct nfs4_sequence_args seq_args;
+};
+
+struct nfs41_reclaim_complete_res {
+ struct nfs4_sequence_res seq_res;
+};
#endif /* CONFIG_NFS_V4_1 */
struct nfs_page;
--
1.5.4.3
--
To unsubscribe from this list: send the line "unsubscribe linux-nfs" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
