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nfsd41: Backchannel: cleanup nfs4.0 callback encode routines

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Mimic the client and prepare to share the back channel xdr with NFSv4.1.
Bump the number of operations in each encode routine, then backfill the
number of operations.

Signed-off-by: Andy Adamson <andros@netapp.com>
Signed-off-by: Benny Halevy <bhalevy@panasas.com>
Signed-off-by: Ricardo Labiaga <Ricardo.Labiaga@netapp.com>
Signed-off-by: Benny Halevy <bhalevy@panasas.com>
Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
This commit is contained in:
Andy Adamson 2009-06-16 04:20:50 +03:00 committed by J. Bruce Fields
parent 6ddbbbfe52
commit ef52bff840
1 changed files with 16 additions and 8 deletions
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24
fs/nfsd/nfs4callback.c
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@ -140,8 +140,9 @@ struct nfs4_cb_compound_hdr {
int status; int status;
u32 ident; u32 ident;
u32 nops; u32 nops;
__be32 *nops_p;
u32 taglen; u32 taglen;
char * tag; char *tag;
}; };
static struct { static struct {
@ -201,7 +202,7 @@ nfs_cb_stat_to_errno(int stat)
* XDR encode * XDR encode
*/ */
static int static void
encode_cb_compound_hdr(struct xdr_stream *xdr, struct nfs4_cb_compound_hdr *hdr) encode_cb_compound_hdr(struct xdr_stream *xdr, struct nfs4_cb_compound_hdr *hdr)
{ {
__be32 * p; __be32 * p;
@ -210,12 +211,18 @@ encode_cb_compound_hdr(struct xdr_stream *xdr, struct nfs4_cb_compound_hdr *hdr)
WRITE32(0); /* tag length is always 0 */ WRITE32(0); /* tag length is always 0 */
WRITE32(NFS4_MINOR_VERSION); WRITE32(NFS4_MINOR_VERSION);
WRITE32(hdr->ident); WRITE32(hdr->ident);
hdr->nops_p = p;
WRITE32(hdr->nops); WRITE32(hdr->nops);
return 0;
} }
static int static void encode_cb_nops(struct nfs4_cb_compound_hdr *hdr)
encode_cb_recall(struct xdr_stream *xdr, struct nfs4_delegation *dp) {
*hdr->nops_p = htonl(hdr->nops);
}
static void
encode_cb_recall(struct xdr_stream *xdr, struct nfs4_delegation *dp,
struct nfs4_cb_compound_hdr *hdr)
{ {
__be32 *p; __be32 *p;
int len = dp->dl_fh.fh_size; int len = dp->dl_fh.fh_size;
@ -227,7 +234,7 @@ encode_cb_recall(struct xdr_stream *xdr, struct nfs4_delegation *dp)
WRITE32(0); /* truncate optimization not implemented */ WRITE32(0); /* truncate optimization not implemented */
WRITE32(len); WRITE32(len);
WRITEMEM(&dp->dl_fh.fh_base, len); WRITEMEM(&dp->dl_fh.fh_base, len);
return 0; hdr->nops++;
} }
static int static int
@ -246,12 +253,13 @@ nfs4_xdr_enc_cb_recall(struct rpc_rqst *req, __be32 *p, struct nfs4_delegation *
struct xdr_stream xdr; struct xdr_stream xdr;
struct nfs4_cb_compound_hdr hdr = { struct nfs4_cb_compound_hdr hdr = {
.ident = args->dl_ident, .ident = args->dl_ident,
.nops = 1,
}; };
xdr_init_encode(&xdr, &req->rq_snd_buf, p); xdr_init_encode(&xdr, &req->rq_snd_buf, p);
encode_cb_compound_hdr(&xdr, &hdr); encode_cb_compound_hdr(&xdr, &hdr);
return (encode_cb_recall(&xdr, args)); encode_cb_recall(&xdr, args, &hdr);
encode_cb_nops(&hdr);
return 0;
} }