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authorAndy Adamson <andros@netapp.com>2010-01-21 00:06:27 +0300
committerTrond Myklebust <Trond.Myklebust@netapp.com>2010-02-10 16:30:59 +0300
commitb9efa1b27e25b1286504973c0a6bf0f24106faa8 (patch)
treee2cff0c8c7a33869123ea3e340d3b9ac3eefcef2 /fs/nfs/callback_xdr.c
parent4911096f1a5df73c12c287a42ece4e7b5d9c19ec (diff)
downloadlinux-b9efa1b27e25b1286504973c0a6bf0f24106faa8.tar.xz
nfs41: implement cb_recall_slot
Drain the fore channel and reset the max_slots to the new value. Signed-off-by: Andy Adamson <andros@netapp.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Diffstat (limited to 'fs/nfs/callback_xdr.c')
-rw-r--r--fs/nfs/callback_xdr.c22
1 files changed, 21 insertions, 1 deletions
diff --git a/fs/nfs/callback_xdr.c b/fs/nfs/callback_xdr.c
index 08b430d922c4..8e66e20b59fd 100644
--- a/fs/nfs/callback_xdr.c
+++ b/fs/nfs/callback_xdr.c
@@ -24,6 +24,7 @@
#define CB_OP_SEQUENCE_RES_MAXSZ (CB_OP_HDR_RES_MAXSZ + \
4 + 1 + 3)
#define CB_OP_RECALLANY_RES_MAXSZ (CB_OP_HDR_RES_MAXSZ)
+#define CB_OP_RECALLSLOT_RES_MAXSZ (CB_OP_HDR_RES_MAXSZ)
#endif /* CONFIG_NFS_V4_1 */
#define NFSDBG_FACILITY NFSDBG_CALLBACK
@@ -349,6 +350,20 @@ static unsigned decode_recallany_args(struct svc_rqst *rqstp,
return 0;
}
+static unsigned decode_recallslot_args(struct svc_rqst *rqstp,
+ struct xdr_stream *xdr,
+ struct cb_recallslotargs *args)
+{
+ __be32 *p;
+
+ args->crsa_addr = svc_addr(rqstp);
+ p = read_buf(xdr, 4);
+ if (unlikely(p == NULL))
+ return htonl(NFS4ERR_BADXDR);
+ args->crsa_target_max_slots = ntohl(*p++);
+ return 0;
+}
+
#endif /* CONFIG_NFS_V4_1 */
static __be32 encode_string(struct xdr_stream *xdr, unsigned int len, const char *str)
@@ -557,6 +572,7 @@ preprocess_nfs41_op(int nop, unsigned int op_nr, struct callback_op **op)
case OP_CB_RECALL:
case OP_CB_SEQUENCE:
case OP_CB_RECALL_ANY:
+ case OP_CB_RECALL_SLOT:
*op = &callback_ops[op_nr];
break;
@@ -565,7 +581,6 @@ preprocess_nfs41_op(int nop, unsigned int op_nr, struct callback_op **op)
case OP_CB_NOTIFY:
case OP_CB_PUSH_DELEG:
case OP_CB_RECALLABLE_OBJ_AVAIL:
- case OP_CB_RECALL_SLOT:
case OP_CB_WANTS_CANCELLED:
case OP_CB_NOTIFY_LOCK:
return htonl(NFS4ERR_NOTSUPP);
@@ -734,6 +749,11 @@ static struct callback_op callback_ops[] = {
.decode_args = (callback_decode_arg_t)decode_recallany_args,
.res_maxsize = CB_OP_RECALLANY_RES_MAXSZ,
},
+ [OP_CB_RECALL_SLOT] = {
+ .process_op = (callback_process_op_t)nfs4_callback_recallslot,
+ .decode_args = (callback_decode_arg_t)decode_recallslot_args,
+ .res_maxsize = CB_OP_RECALLSLOT_RES_MAXSZ,
+ },
#endif /* CONFIG_NFS_V4_1 */
};