SUNRPC: New xdr_streams XDR decoder API

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

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>

1 files changed, 12 insertions, 2 deletions

diff --git a/net/sunrpc/auth.c b/net/sunrpc/auth.c
index 651c9da703cb..67e31276682a 100644
--- a/net/sunrpc/auth.c
+++ b/net/sunrpc/auth.c
@@ -587,8 +587,18 @@ rpcauth_wrap_req(struct rpc_task *task, kxdreproc_t encode, void *rqstp,
         return 0;
 }
 
+static int
+rpcauth_unwrap_req_decode(kxdrdproc_t decode, struct rpc_rqst *rqstp,
+                          __be32 *data, void *obj)
+{
+        struct xdr_stream xdr;
+
+        xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, data);
+        return decode(rqstp, &xdr, obj);
+}
+
 int
-rpcauth_unwrap_resp(struct rpc_task *task, kxdrproc_t decode, void *rqstp,
+rpcauth_unwrap_resp(struct rpc_task *task, kxdrdproc_t decode, void *rqstp,
                 __be32 *data, void *obj)
 {
         struct rpc_cred *cred = task->tk_rqstp->rq_cred;
@@ -599,7 +609,7 @@ rpcauth_unwrap_resp(struct rpc_task *task, kxdrproc_t decode, void *rqstp,
                 return cred->cr_ops->crunwrap_resp(task, decode, rqstp,
                                                    data, obj);
         /* By default, we decode the arguments normally. */
-        return decode(rqstp, data, obj);
+        return rpcauth_unwrap_req_decode(decode, rqstp, data, obj);
 }
 
 int