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authorBryan Schumaker <bjschuma@netapp.com>2013-06-05 11:15:02 -0400
committerTrond Myklebust <Trond.Myklebust@netapp.com>2013-06-08 16:20:18 -0400
commit6b140b85d92bd65db44f0a7a065b2e39a91e9a9d (patch)
tree5fb725e6877f30cb2bc8d39d6fbe37142543bfa7 /fs
parent459de2edb9105a5d091f8215650e12c0812d59f3 (diff)
downloadlinux-6b140b85d92bd65db44f0a7a065b2e39a91e9a9d.tar.bz2
NFS: Add in v4.2 callback operation
NFS v4.2 adds a CB_OFFLOAD operation used by COPY and WRITE_PLUS. Since neither of these operations have been implemented yet, simply return NFS4ERR_NOTSUPP. Signed-off-by: Bryan Schumaker <bjschuma@netapp.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Diffstat (limited to 'fs')
-rw-r--r--fs/nfs/callback.h2
-rw-r--r--fs/nfs/callback_xdr.c36
2 files changed, 36 insertions, 2 deletions
diff --git a/fs/nfs/callback.h b/fs/nfs/callback.h
index 41cf8934f4e7..84326e9fb47a 100644
--- a/fs/nfs/callback.h
+++ b/fs/nfs/callback.h
@@ -32,6 +32,8 @@ enum nfs4_callback_opnum {
OP_CB_WANTS_CANCELLED = 12,
OP_CB_NOTIFY_LOCK = 13,
OP_CB_NOTIFY_DEVICEID = 14,
+/* Callback operations new to NFSv4.2 */
+ OP_CB_OFFLOAD = 15,
OP_CB_ILLEGAL = 10044,
};
diff --git a/fs/nfs/callback_xdr.c b/fs/nfs/callback_xdr.c
index 77c0b881520f..d450c21bc382 100644
--- a/fs/nfs/callback_xdr.c
+++ b/fs/nfs/callback_xdr.c
@@ -786,6 +786,26 @@ static void nfs4_cb_free_slot(struct cb_process_state *cps)
}
#endif /* CONFIG_NFS_V4_1 */
+#ifdef CONFIG_NFS_V4_2
+static __be32
+preprocess_nfs42_op(int nop, unsigned int op_nr, struct callback_op **op)
+{
+ __be32 status = preprocess_nfs41_op(nop, op_nr, op);
+ if (status != htonl(NFS4ERR_OP_ILLEGAL))
+ return status;
+
+ if (op_nr == OP_CB_OFFLOAD)
+ return htonl(NFS4ERR_NOTSUPP);
+ return htonl(NFS4ERR_OP_ILLEGAL);
+}
+#else /* CONFIG_NFS_V4_2 */
+static __be32
+preprocess_nfs42_op(int nop, unsigned int op_nr, struct callback_op **op)
+{
+ return htonl(NFS4ERR_MINOR_VERS_MISMATCH);
+}
+#endif /* CONFIG_NFS_V4_2 */
+
static __be32
preprocess_nfs4_op(unsigned int op_nr, struct callback_op **op)
{
@@ -820,8 +840,20 @@ static __be32 process_op(int nop, struct svc_rqst *rqstp,
dprintk("%s: minorversion=%d nop=%d op_nr=%u\n",
__func__, cps->minorversion, nop, op_nr);
- status = cps->minorversion ? preprocess_nfs41_op(nop, op_nr, &op) :
- preprocess_nfs4_op(op_nr, &op);
+ switch (cps->minorversion) {
+ case 0:
+ status = preprocess_nfs4_op(op_nr, &op);
+ break;
+ case 1:
+ status = preprocess_nfs41_op(nop, op_nr, &op);
+ break;
+ case 2:
+ status = preprocess_nfs42_op(nop, op_nr, &op);
+ break;
+ default:
+ status = htonl(NFS4ERR_MINOR_VERS_MISMATCH);
+ }
+
if (status == htonl(NFS4ERR_OP_ILLEGAL))
op_nr = OP_CB_ILLEGAL;
if (status)