nfsd4: implement secinfo_no_name

Implementation of this operation is mandatory for NFSv4.1.

Signed-off-by: J. Bruce Fields <bfields@redhat.com>
diff --git a/include/linux/nfs4.h b/include/linux/nfs4.h
index 4925b22..26afa30 100644
--- a/include/linux/nfs4.h
+++ b/include/linux/nfs4.h
@@ -136,6 +136,9 @@
 #define SEQ4_STATUS_CB_PATH_DOWN_SESSION	0x00000200
 #define SEQ4_STATUS_BACKCHANNEL_FAULT		0x00000400
 
+#define NFS4_SECINFO_STYLE4_CURRENT_FH	0
+#define NFS4_SECINFO_STYLE4_PARENT	1
+
 #define NFS4_MAX_UINT64	(~(u64)0)
 
 /* An NFS4 sessions server must support at least NFS4_MAX_OPS operations.