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SUNRPC: New xdr_streams XDR encoder API

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Now that all client-side XDR encoder routines use xdr_streams, there
should be no need to support the legacy calling sequence [rpc_rqst *,
__be32 *, RPC arg *] anywhere.  We can construct an xdr_stream in the
generic RPC code, instead of in each encoder function.

Also, all the client-side encoder functions return 0 now, making a
return value superfluous.  Take this opportunity to convert them to
return void instead.

This is a refactoring change.  It should not cause different behavior.

Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Tested-by: J. Bruce Fields <bfields@redhat.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
This commit is contained in:
Chuck Lever
2010-12-14 14:59:18 +00:00
committed by Trond Myklebust
parent 1ac7c23e4a
commit 9f06c719f4
15 changed files with 606 additions and 807 deletions
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22
fs/nfsd/nfs4callback.c
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@@ -499,34 +499,28 @@ out_default:
/*
* NB: Without this zero space reservation, callbacks over krb5p fail
*/
static int nfs4_xdr_enc_cb_null(struct rpc_rqst *req, __be32 *p, void *__unused)
static void nfs4_xdr_enc_cb_null(struct rpc_rqst *req, struct xdr_stream *xdr,
void *__unused)
{
struct xdr_stream xdrs, *xdr = &xdrs;
xdr_init_encode(&xdrs, &req->rq_snd_buf, p);
xdr_reserve_space(xdr, 0);
return 0;
}
/*
* 20.2. Operation 4: CB_RECALL - Recall a Delegation
*/
static int nfs4_xdr_enc_cb_recall(struct rpc_rqst *req, __be32 *p,
const struct nfsd4_callback *cb)
static void nfs4_xdr_enc_cb_recall(struct rpc_rqst *req, struct xdr_stream *xdr,
const struct nfsd4_callback *cb)
{
struct xdr_stream xdr;
const struct nfs4_delegation *args = cb->cb_op;
struct nfs4_cb_compound_hdr hdr = {
.ident = cb->cb_clp->cl_cb_ident,
.minorversion = cb->cb_minorversion,
};
xdr_init_encode(&xdr, &req->rq_snd_buf, p);
encode_cb_compound4args(&xdr, &hdr);
encode_cb_sequence4args(&xdr, cb, &hdr);
encode_cb_recall4args(&xdr, args, &hdr);
encode_cb_compound4args(xdr, &hdr);
encode_cb_sequence4args(xdr, cb, &hdr);
encode_cb_recall4args(xdr, args, &hdr);
encode_cb_nops(&hdr);
return 0;
}
@@ -583,7 +577,7 @@ out_default:
#define PROC(proc, call, argtype, restype) \
[NFSPROC4_CLNT_##proc] = { \
.p_proc = NFSPROC4_CB_##call, \
.p_encode = (kxdrproc_t)nfs4_xdr_enc_##argtype, \
.p_encode = (kxdreproc_t)nfs4_xdr_enc_##argtype, \
.p_decode = (kxdrproc_t)nfs4_xdr_dec_##restype, \
.p_arglen = NFS4_enc_##argtype##_sz, \
.p_replen = NFS4_dec_##restype##_sz, \