SUNRPC: New xdr_streams XDR encoder API
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>
diff --git a/fs/nfs/nfs3xdr.c b/fs/nfs/nfs3xdr.c
index 15c93cc..ae1b1a43 100644
--- a/fs/nfs/nfs3xdr.c
+++ b/fs/nfs/nfs3xdr.c
@@ -835,14 +835,11 @@
* nfs_fh3 object;
* };
*/
-static int nfs3_xdr_enc_getattr3args(struct rpc_rqst *req, __be32 *p,
- const struct nfs_fh *fh)
+static void nfs3_xdr_enc_getattr3args(struct rpc_rqst *req,
+ struct xdr_stream *xdr,
+ const struct nfs_fh *fh)
{
- struct xdr_stream xdr;
-
- xdr_init_encode(&xdr, &req->rq_snd_buf, p);
- encode_nfs_fh3(&xdr, fh);
- return 0;
+ encode_nfs_fh3(xdr, fh);
}
/*
@@ -876,16 +873,13 @@
}
}
-static int nfs3_xdr_enc_setattr3args(struct rpc_rqst *req, __be32 *p,
- const struct nfs3_sattrargs *args)
+static void nfs3_xdr_enc_setattr3args(struct rpc_rqst *req,
+ struct xdr_stream *xdr,
+ const struct nfs3_sattrargs *args)
{
- struct xdr_stream xdr;
-
- xdr_init_encode(&xdr, &req->rq_snd_buf, p);
- encode_nfs_fh3(&xdr, args->fh);
- encode_sattr3(&xdr, args->sattr);
- encode_sattrguard3(&xdr, args);
- return 0;
+ encode_nfs_fh3(xdr, args->fh);
+ encode_sattr3(xdr, args->sattr);
+ encode_sattrguard3(xdr, args);
}
/*
@@ -895,14 +889,11 @@
* diropargs3 what;
* };
*/
-static int nfs3_xdr_enc_lookup3args(struct rpc_rqst *req, __be32 *p,
- const struct nfs3_diropargs *args)
+static void nfs3_xdr_enc_lookup3args(struct rpc_rqst *req,
+ struct xdr_stream *xdr,
+ const struct nfs3_diropargs *args)
{
- struct xdr_stream xdr;
-
- xdr_init_encode(&xdr, &req->rq_snd_buf, p);
- encode_diropargs3(&xdr, args->fh, args->name, args->len);
- return 0;
+ encode_diropargs3(xdr, args->fh, args->name, args->len);
}
/*
@@ -920,14 +911,11 @@
encode_uint32(xdr, args->access);
}
-static int nfs3_xdr_enc_access3args(struct rpc_rqst *req, __be32 *p,
- const struct nfs3_accessargs *args)
+static void nfs3_xdr_enc_access3args(struct rpc_rqst *req,
+ struct xdr_stream *xdr,
+ const struct nfs3_accessargs *args)
{
- struct xdr_stream xdr;
-
- xdr_init_encode(&xdr, &req->rq_snd_buf, p);
- encode_access3args(&xdr, args);
- return 0;
+ encode_access3args(xdr, args);
}
/*
@@ -937,16 +925,13 @@
* nfs_fh3 symlink;
* };
*/
-static int nfs3_xdr_enc_readlink3args(struct rpc_rqst *req, __be32 *p,
- const struct nfs3_readlinkargs *args)
+static void nfs3_xdr_enc_readlink3args(struct rpc_rqst *req,
+ struct xdr_stream *xdr,
+ const struct nfs3_readlinkargs *args)
{
- struct xdr_stream xdr;
-
- xdr_init_encode(&xdr, &req->rq_snd_buf, p);
- encode_nfs_fh3(&xdr, args->fh);
+ encode_nfs_fh3(xdr, args->fh);
prepare_reply_buffer(req, args->pages, args->pgbase,
args->pglen, NFS3_readlinkres_sz);
- return 0;
}
/*
@@ -970,17 +955,14 @@
*p = cpu_to_be32(args->count);
}
-static int nfs3_xdr_enc_read3args(struct rpc_rqst *req, __be32 *p,
- const struct nfs_readargs *args)
+static void nfs3_xdr_enc_read3args(struct rpc_rqst *req,
+ struct xdr_stream *xdr,
+ const struct nfs_readargs *args)
{
- struct xdr_stream xdr;
-
- xdr_init_encode(&xdr, &req->rq_snd_buf, p);
- encode_read3args(&xdr, args);
+ encode_read3args(xdr, args);
prepare_reply_buffer(req, args->pages, args->pgbase,
args->count, NFS3_readres_sz);
req->rq_rcv_buf.flags |= XDRBUF_READ;
- return 0;
}
/*
@@ -1015,15 +997,12 @@
xdr_write_pages(xdr, args->pages, args->pgbase, args->count);
}
-static int nfs3_xdr_enc_write3args(struct rpc_rqst *req, __be32 *p,
- const struct nfs_writeargs *args)
+static void nfs3_xdr_enc_write3args(struct rpc_rqst *req,
+ struct xdr_stream *xdr,
+ const struct nfs_writeargs *args)
{
- struct xdr_stream xdr;
-
- xdr_init_encode(&xdr, &req->rq_snd_buf, p);
- encode_write3args(&xdr, args);
- xdr.buf->flags |= XDRBUF_WRITE;
- return 0;
+ encode_write3args(xdr, args);
+ xdr->buf->flags |= XDRBUF_WRITE;
}
/*
@@ -1065,15 +1044,12 @@
}
}
-static int nfs3_xdr_enc_create3args(struct rpc_rqst *req, __be32 *p,
- const struct nfs3_createargs *args)
+static void nfs3_xdr_enc_create3args(struct rpc_rqst *req,
+ struct xdr_stream *xdr,
+ const struct nfs3_createargs *args)
{
- struct xdr_stream xdr;
-
- xdr_init_encode(&xdr, &req->rq_snd_buf, p);
- encode_diropargs3(&xdr, args->fh, args->name, args->len);
- encode_createhow3(&xdr, args);
- return 0;
+ encode_diropargs3(xdr, args->fh, args->name, args->len);
+ encode_createhow3(xdr, args);
}
/*
@@ -1084,15 +1060,12 @@
* sattr3 attributes;
* };
*/
-static int nfs3_xdr_enc_mkdir3args(struct rpc_rqst *req, __be32 *p,
- const struct nfs3_mkdirargs *args)
+static void nfs3_xdr_enc_mkdir3args(struct rpc_rqst *req,
+ struct xdr_stream *xdr,
+ const struct nfs3_mkdirargs *args)
{
- struct xdr_stream xdr;
-
- xdr_init_encode(&xdr, &req->rq_snd_buf, p);
- encode_diropargs3(&xdr, args->fh, args->name, args->len);
- encode_sattr3(&xdr, args->sattr);
- return 0;
+ encode_diropargs3(xdr, args->fh, args->name, args->len);
+ encode_sattr3(xdr, args->sattr);
}
/*
@@ -1115,15 +1088,12 @@
encode_nfspath3(xdr, args->pages, args->pathlen);
}
-static int nfs3_xdr_enc_symlink3args(struct rpc_rqst *req, __be32 *p,
- const struct nfs3_symlinkargs *args)
+static void nfs3_xdr_enc_symlink3args(struct rpc_rqst *req,
+ struct xdr_stream *xdr,
+ const struct nfs3_symlinkargs *args)
{
- struct xdr_stream xdr;
-
- xdr_init_encode(&xdr, &req->rq_snd_buf, p);
- encode_diropargs3(&xdr, args->fromfh, args->fromname, args->fromlen);
- encode_symlinkdata3(&xdr, args);
- return 0;
+ encode_diropargs3(xdr, args->fromfh, args->fromname, args->fromlen);
+ encode_symlinkdata3(xdr, args);
}
/*
@@ -1178,15 +1148,12 @@
}
}
-static int nfs3_xdr_enc_mknod3args(struct rpc_rqst *req, __be32 *p,
- const struct nfs3_mknodargs *args)
+static void nfs3_xdr_enc_mknod3args(struct rpc_rqst *req,
+ struct xdr_stream *xdr,
+ const struct nfs3_mknodargs *args)
{
- struct xdr_stream xdr;
-
- xdr_init_encode(&xdr, &req->rq_snd_buf, p);
- encode_diropargs3(&xdr, args->fh, args->name, args->len);
- encode_mknoddata3(&xdr, args);
- return 0;
+ encode_diropargs3(xdr, args->fh, args->name, args->len);
+ encode_mknoddata3(xdr, args);
}
/*
@@ -1196,14 +1163,11 @@
* diropargs3 object;
* };
*/
-static int nfs3_xdr_enc_remove3args(struct rpc_rqst *req, __be32 *p,
- const struct nfs_removeargs *args)
+static void nfs3_xdr_enc_remove3args(struct rpc_rqst *req,
+ struct xdr_stream *xdr,
+ const struct nfs_removeargs *args)
{
- struct xdr_stream xdr;
-
- xdr_init_encode(&xdr, &req->rq_snd_buf, p);
- encode_diropargs3(&xdr, args->fh, args->name.name, args->name.len);
- return 0;
+ encode_diropargs3(xdr, args->fh, args->name.name, args->name.len);
}
/*
@@ -1214,17 +1178,15 @@
* diropargs3 to;
* };
*/
-static int nfs3_xdr_enc_rename3args(struct rpc_rqst *req, __be32 *p,
- const struct nfs_renameargs *args)
+static void nfs3_xdr_enc_rename3args(struct rpc_rqst *req,
+ struct xdr_stream *xdr,
+ const struct nfs_renameargs *args)
{
const struct qstr *old = args->old_name;
const struct qstr *new = args->new_name;
- struct xdr_stream xdr;
- xdr_init_encode(&xdr, &req->rq_snd_buf, p);
- encode_diropargs3(&xdr, args->old_dir, old->name, old->len);
- encode_diropargs3(&xdr, args->new_dir, new->name, new->len);
- return 0;
+ encode_diropargs3(xdr, args->old_dir, old->name, old->len);
+ encode_diropargs3(xdr, args->new_dir, new->name, new->len);
}
/*
@@ -1235,15 +1197,12 @@
* diropargs3 link;
* };
*/
-static int nfs3_xdr_enc_link3args(struct rpc_rqst *req, __be32 *p,
- const struct nfs3_linkargs *args)
+static void nfs3_xdr_enc_link3args(struct rpc_rqst *req,
+ struct xdr_stream *xdr,
+ const struct nfs3_linkargs *args)
{
- struct xdr_stream xdr;
-
- xdr_init_encode(&xdr, &req->rq_snd_buf, p);
- encode_nfs_fh3(&xdr, args->fromfh);
- encode_diropargs3(&xdr, args->tofh, args->toname, args->tolen);
- return 0;
+ encode_nfs_fh3(xdr, args->fromfh);
+ encode_diropargs3(xdr, args->tofh, args->toname, args->tolen);
}
/*
@@ -1269,16 +1228,13 @@
*p = cpu_to_be32(args->count);
}
-static int nfs3_xdr_enc_readdir3args(struct rpc_rqst *req, __be32 *p,
- const struct nfs3_readdirargs *args)
+static void nfs3_xdr_enc_readdir3args(struct rpc_rqst *req,
+ struct xdr_stream *xdr,
+ const struct nfs3_readdirargs *args)
{
- struct xdr_stream xdr;
-
- xdr_init_encode(&xdr, &req->rq_snd_buf, p);
- encode_readdir3args(&xdr, args);
+ encode_readdir3args(xdr, args);
prepare_reply_buffer(req, args->pages, 0,
args->count, NFS3_readdirres_sz);
- return 0;
}
/*
@@ -1312,16 +1268,13 @@
*p = cpu_to_be32(args->count);
}
-static int nfs3_xdr_enc_readdirplus3args(struct rpc_rqst *req, __be32 *p,
- const struct nfs3_readdirargs *args)
+static void nfs3_xdr_enc_readdirplus3args(struct rpc_rqst *req,
+ struct xdr_stream *xdr,
+ const struct nfs3_readdirargs *args)
{
- struct xdr_stream xdr;
-
- xdr_init_encode(&xdr, &req->rq_snd_buf, p);
- encode_readdirplus3args(&xdr, args);
+ encode_readdirplus3args(xdr, args);
prepare_reply_buffer(req, args->pages, 0,
args->count, NFS3_readdirres_sz);
- return 0;
}
/*
@@ -1345,57 +1298,49 @@
*p = cpu_to_be32(args->count);
}
-static int nfs3_xdr_enc_commit3args(struct rpc_rqst *req, __be32 *p,
- const struct nfs_writeargs *args)
+static void nfs3_xdr_enc_commit3args(struct rpc_rqst *req,
+ struct xdr_stream *xdr,
+ const struct nfs_writeargs *args)
{
- struct xdr_stream xdr;
-
- xdr_init_encode(&xdr, &req->rq_snd_buf, p);
- encode_commit3args(&xdr, args);
- return 0;
+ encode_commit3args(xdr, args);
}
#ifdef CONFIG_NFS_V3_ACL
-static int nfs3_xdr_enc_getacl3args(struct rpc_rqst *req, __be32 *p,
- const struct nfs3_getaclargs *args)
+static void nfs3_xdr_enc_getacl3args(struct rpc_rqst *req,
+ struct xdr_stream *xdr,
+ const struct nfs3_getaclargs *args)
{
- struct xdr_stream xdr;
-
- xdr_init_encode(&xdr, &req->rq_snd_buf, p);
- encode_nfs_fh3(&xdr, args->fh);
- encode_uint32(&xdr, args->mask);
+ encode_nfs_fh3(xdr, args->fh);
+ encode_uint32(xdr, args->mask);
if (args->mask & (NFS_ACL | NFS_DFACL))
prepare_reply_buffer(req, args->pages, 0,
NFSACL_MAXPAGES << PAGE_SHIFT,
ACL3_getaclres_sz);
- return 0;
}
-static int nfs3_xdr_enc_setacl3args(struct rpc_rqst *req, __be32 *p,
- const struct nfs3_setaclargs *args)
+static void nfs3_xdr_enc_setacl3args(struct rpc_rqst *req,
+ struct xdr_stream *xdr,
+ const struct nfs3_setaclargs *args)
{
- struct xdr_stream xdr;
unsigned int base;
int error;
- xdr_init_encode(&xdr, &req->rq_snd_buf, p);
- encode_nfs_fh3(&xdr, NFS_FH(args->inode));
- encode_uint32(&xdr, args->mask);
+ encode_nfs_fh3(xdr, NFS_FH(args->inode));
+ encode_uint32(xdr, args->mask);
if (args->npages != 0)
- xdr_write_pages(&xdr, args->pages, 0, args->len);
+ xdr_write_pages(xdr, args->pages, 0, args->len);
base = req->rq_slen;
- error = nfsacl_encode(xdr.buf, base, args->inode,
+ error = nfsacl_encode(xdr->buf, base, args->inode,
(args->mask & NFS_ACL) ?
args->acl_access : NULL, 1, 0);
BUG_ON(error < 0);
- error = nfsacl_encode(xdr.buf, base + error, args->inode,
+ error = nfsacl_encode(xdr->buf, base + error, args->inode,
(args->mask & NFS_DFACL) ?
args->acl_default : NULL, 1,
NFS_ACL_DEFAULT);
BUG_ON(error < 0);
- return 0;
}
#endif /* CONFIG_NFS_V3_ACL */
@@ -2506,7 +2451,7 @@
#define PROC(proc, argtype, restype, timer) \
[NFS3PROC_##proc] = { \
.p_proc = NFS3PROC_##proc, \
- .p_encode = (kxdrproc_t)nfs3_xdr_enc_##argtype##3args, \
+ .p_encode = (kxdreproc_t)nfs3_xdr_enc_##argtype##3args, \
.p_decode = (kxdrproc_t)nfs3_xdr_dec_##restype##3res, \
.p_arglen = NFS3_##argtype##args_sz, \
.p_replen = NFS3_##restype##res_sz, \
@@ -2549,7 +2494,7 @@
static struct rpc_procinfo nfs3_acl_procedures[] = {
[ACLPROC3_GETACL] = {
.p_proc = ACLPROC3_GETACL,
- .p_encode = (kxdrproc_t)nfs3_xdr_enc_getacl3args,
+ .p_encode = (kxdreproc_t)nfs3_xdr_enc_getacl3args,
.p_decode = (kxdrproc_t)nfs3_xdr_dec_getacl3res,
.p_arglen = ACL3_getaclargs_sz,
.p_replen = ACL3_getaclres_sz,
@@ -2558,7 +2503,7 @@
},
[ACLPROC3_SETACL] = {
.p_proc = ACLPROC3_SETACL,
- .p_encode = (kxdrproc_t)nfs3_xdr_enc_setacl3args,
+ .p_encode = (kxdreproc_t)nfs3_xdr_enc_setacl3args,
.p_decode = (kxdrproc_t)nfs3_xdr_dec_setacl3res,
.p_arglen = ACL3_setaclargs_sz,
.p_replen = ACL3_setaclres_sz,