From 132f97715c098393fb8de3c26b07b9fdbd2334f1 Mon Sep 17 00:00:00 2001
From: Ricardo Labiaga <Ricardo.Labiaga@netapp.com>
Date: Thu, 10 Sep 2009 12:26:12 +0300
Subject: [PATCH] nfsd41: Backchannel: Add sequence arguments to callback RPC
 arguments

Follow the model we use in the client. Make the sequence arguments
part of the regular RPC arguments.  None of the callbacks that are
soon to be implemented expect results that need to be passed back
to the caller, so we don't define a separate RPC results structure.
For session validation, the cb_sequence decoding will use a pointer
to the sequence arguments that are part of the RPC argument.

Signed-off-by: Ricardo Labiaga <Ricardo.Labiaga@netapp.com>
[define struct nfsd4_cb_sequence here]
Signed-off-by: Benny Halevy <bhalevy@panasas.com>
Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
---
 fs/nfsd/nfs4callback.c     | 5 +++++
 include/linux/nfsd/state.h | 6 ++++++
 2 files changed, 11 insertions(+)

diff --git a/fs/nfsd/nfs4callback.c b/fs/nfsd/nfs4callback.c
index db4188ce9b00..f31175717c1a 100644
--- a/fs/nfsd/nfs4callback.c
+++ b/fs/nfsd/nfs4callback.c
@@ -92,6 +92,11 @@ enum nfs_cb_opnum4 {
 					cb_sequence_dec_sz +            \
 					op_dec_sz)
 
+struct nfs4_rpc_args {
+	void				*args_op;
+	struct nfsd4_cb_sequence	args_seq;
+};
+
 /*
 * Generic encode routines from fs/nfs/nfs4xdr.c
 */
diff --git a/include/linux/nfsd/state.h b/include/linux/nfsd/state.h
index c916032570c4..0e5b5aecde03 100644
--- a/include/linux/nfsd/state.h
+++ b/include/linux/nfsd/state.h
@@ -60,6 +60,12 @@ typedef struct {
 #define si_stateownerid   si_opaque.so_stateownerid
 #define si_fileid         si_opaque.so_fileid
 
+struct nfsd4_cb_sequence {
+	/* args/res */
+	u32			cbs_minorversion;
+	struct nfs4_client	*cbs_clp;
+};
+
 struct nfs4_delegation {
 	struct list_head	dl_perfile;
 	struct list_head	dl_perclnt;
-- 
2.34.1