--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/include/linux/nfsd/const.h	Sun Jan 11 20:20:11 2009 +0100
@@ -0,0 +1,55 @@
+/*
+ * include/linux/nfsd/const.h
+ *
+ * Various constants related to NFS.
+ *
+ * Copyright (C) 1995-1997 Olaf Kirch <okir@monad.swb.de>
+ */
+
+#ifndef _LINUX_NFSD_CONST_H
+#define _LINUX_NFSD_CONST_H
+
+#include <linux/nfs.h>
+#include <linux/nfs2.h>
+#include <linux/nfs3.h>
+#include <linux/nfs4.h>
+
+/*
+ * Maximum protocol version supported by knfsd
+ */
+#define NFSSVC_MAXVERS		3
+
+/*
+ * Maximum blocksizes supported by daemon under various circumstances.
+ */
+#define NFSSVC_MAXBLKSIZE	RPCSVC_MAXPAYLOAD
+/* NFSv2 is limited by the protocol specification, see RFC 1094 */
+#define NFSSVC_MAXBLKSIZE_V2	(8*1024)
+
+#ifdef __KERNEL__
+
+#include <linux/sunrpc/msg_prot.h>
+
+/*
+ * Largest number of bytes we need to allocate for an NFS
+ * call or reply.  Used to control buffer sizes.  We use
+ * the length of v3 WRITE, READDIR and READDIR replies
+ * which are an RPC header, up to 26 XDR units of reply
+ * data, and some page data.
+ *
+ * Note that accuracy here doesn't matter too much as the
+ * size is rounded up to a page size when allocating space.
+ */
+#define NFSD_BUFSIZE		((RPC_MAX_HEADER_WITH_AUTH+26)*XDR_UNIT + NFSSVC_MAXBLKSIZE)
+
+#ifdef CONFIG_NFSD_V4
+# define NFSSVC_XDRSIZE		NFS4_SVC_XDRSIZE
+#elif defined(CONFIG_NFSD_V3)
+# define NFSSVC_XDRSIZE		NFS3_SVC_XDRSIZE
+#else
+# define NFSSVC_XDRSIZE		NFS2_SVC_XDRSIZE
+#endif
+
+#endif /* __KERNEL__ */
+
+#endif /* _LINUX_NFSD_CONST_H */