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pnfs: CB_LAYOUTRECALL xdr code 

This is the xdr decoding for CB_LAYOUTRECALL.

Signed-off-by: Alexandros Batsakis <batsakis@netapp.com>
Signed-off-by: Dean Hildebrand <dhildeb@us.ibm.com>
Signed-off-by: Marc Eshel <eshel@almaden.ibm.com>
Signed-off-by: Andy Adamson <andros@netapp.com>
Signed-off-by: Benny Halevy <bhalevy@panasas.com>
Signed-off-by: Fred Isaman <iisaman@netapp.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
wifi-calibration
Fred Isaman 2011-01-06 11:36:29 +00:00 committed by Trond Myklebust
parent cc6e5340b0
commit f2a6256160
3 changed files with 93 additions and 1 deletions
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19
fs/nfs/callback.h
View File

@ -138,6 +138,25 @@ extern __be32 nfs4_callback_recallslot(struct cb_recallslotargs *args,
void *dummy,
struct cb_process_state *cps);
struct cb_layoutrecallargs {
struct sockaddr *cbl_addr;
uint32_t cbl_recall_type;
uint32_t cbl_layout_type;
uint32_t cbl_layoutchanged;
union {
struct {
struct nfs_fh cbl_fh;
struct pnfs_layout_range cbl_range;
nfs4_stateid cbl_stateid;
};
struct nfs_fsid cbl_fsid;
};
};
extern unsigned nfs4_callback_layoutrecall(
struct cb_layoutrecallargs *args,
void *dummy, struct cb_process_state *cps);
extern void nfs4_check_drain_bc_complete(struct nfs4_session *ses);
extern void nfs4_cb_take_slot(struct nfs_client *clp);
#endif /* CONFIG_NFS_V4_1 */

6
fs/nfs/callback_proc.c
View File

@ -107,6 +107,12 @@ int nfs4_validate_delegation_stateid(struct nfs_delegation *delegation, const nf
#if defined(CONFIG_NFS_V4_1)
__be32 nfs4_callback_layoutrecall(struct cb_layoutrecallargs *args,
void *dummy, struct cb_process_state *cps)
{
return cpu_to_be32(NFS4ERR_NOTSUPP); /* STUB */
}
int nfs41_validate_delegation_stateid(struct nfs_delegation *delegation, const nfs4_stateid *stateid)
{
if (delegation == NULL)

69
fs/nfs/callback_xdr.c
View File

@ -24,6 +24,7 @@
#define CB_OP_RECALL_RES_MAXSZ (CB_OP_HDR_RES_MAXSZ)
#if defined(CONFIG_NFS_V4_1)
#define CB_OP_LAYOUTRECALL_RES_MAXSZ (CB_OP_HDR_RES_MAXSZ)
#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)
@ -223,6 +224,66 @@ out:
#if defined(CONFIG_NFS_V4_1)
static __be32 decode_layoutrecall_args(struct svc_rqst *rqstp,
struct xdr_stream *xdr,
struct cb_layoutrecallargs *args)
{
__be32 *p;
__be32 status = 0;
uint32_t iomode;
args->cbl_addr = svc_addr(rqstp);
p = read_buf(xdr, 4 * sizeof(uint32_t));
if (unlikely(p == NULL)) {
status = htonl(NFS4ERR_BADXDR);
goto out;
}
args->cbl_layout_type = ntohl(*p++);
/* Depite the spec's xdr, iomode really belongs in the FILE switch,
* as it is unuseable and ignored with the other types.
*/
iomode = ntohl(*p++);
args->cbl_layoutchanged = ntohl(*p++);
args->cbl_recall_type = ntohl(*p++);
if (args->cbl_recall_type == RETURN_FILE) {
args->cbl_range.iomode = iomode;
status = decode_fh(xdr, &args->cbl_fh);
if (unlikely(status != 0))
goto out;
p = read_buf(xdr, 2 * sizeof(uint64_t));
if (unlikely(p == NULL)) {
status = htonl(NFS4ERR_BADXDR);
goto out;
}
p = xdr_decode_hyper(p, &args->cbl_range.offset);
p = xdr_decode_hyper(p, &args->cbl_range.length);
status = decode_stateid(xdr, &args->cbl_stateid);
if (unlikely(status != 0))
goto out;
} else if (args->cbl_recall_type == RETURN_FSID) {
p = read_buf(xdr, 2 * sizeof(uint64_t));
if (unlikely(p == NULL)) {
status = htonl(NFS4ERR_BADXDR);
goto out;
}
p = xdr_decode_hyper(p, &args->cbl_fsid.major);
p = xdr_decode_hyper(p, &args->cbl_fsid.minor);
} else if (args->cbl_recall_type != RETURN_ALL) {
status = htonl(NFS4ERR_BADXDR);
goto out;
}
dprintk("%s: ltype 0x%x iomode %d changed %d recall_type %d\n",
__func__,
args->cbl_layout_type, iomode,
args->cbl_layoutchanged, args->cbl_recall_type);
out:
dprintk("%s: exit with status = %d\n", __func__, ntohl(status));
return status;
}
static __be32 decode_sessionid(struct xdr_stream *xdr,
struct nfs4_sessionid *sid)
{
@ -577,10 +638,10 @@ preprocess_nfs41_op(int nop, unsigned int op_nr, struct callback_op **op)
case OP_CB_SEQUENCE:
case OP_CB_RECALL_ANY:
case OP_CB_RECALL_SLOT:
case OP_CB_LAYOUTRECALL:
*op = &callback_ops[op_nr];
break;
case OP_CB_LAYOUTRECALL:
case OP_CB_NOTIFY_DEVICEID:
case OP_CB_NOTIFY:
case OP_CB_PUSH_DELEG:
@ -783,6 +844,12 @@ static struct callback_op callback_ops[] = {
.res_maxsize = CB_OP_RECALL_RES_MAXSZ,
},
#if defined(CONFIG_NFS_V4_1)
[OP_CB_LAYOUTRECALL] = {
.process_op = (callback_process_op_t)nfs4_callback_layoutrecall,
.decode_args =
(callback_decode_arg_t)decode_layoutrecall_args,
.res_maxsize = CB_OP_LAYOUTRECALL_RES_MAXSZ,
},
[OP_CB_SEQUENCE] = {
.process_op = (callback_process_op_t)nfs4_callback_sequence,
.decode_args = (callback_decode_arg_t)decode_cb_sequence_args,