nfsd: use nfs client rpc callback program

since commit ff7d9756b501744540be65e172d27ee321d86103
"nfsd: use static memory for callback program and stats"
do_probe_callback uses a static callback program
(NFS4_CALLBACK) rather than the one set in clp->cl_callback.cb_prog
as passed in by the client in setclientid (4.0)
or create_session (4.1).

This patches introduces rpc_create_args.prognumber that allows
overriding program->number when creating rpc_clnt.

Signed-off-by: Benny Halevy <bhalevy@panasas.com>
Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>

1 files changed, 1 insertions, 0 deletions

diff --git a/include/linux/sunrpc/clnt.h b/include/linux/sunrpc/clnt.h
index 8ac8e75243a7..6f0ee1b84a4f 100644
--- a/include/linux/sunrpc/clnt.h
+++ b/include/linux/sunrpc/clnt.h
@@ -104,6 +104,7 @@ struct rpc_create_args {
         const struct rpc_timeout *timeout;
         char                    *servername;
         struct rpc_program      *program;
+        u32                     prognumber;     /* overrides program->number */
         u32                     version;
         rpc_authflavor_t        authflavor;
         unsigned long           flags;