NFS: Add SECINFO_NO_NAME procedure

If the client is using NFS v4.1, then we can use SECINFO_NO_NAME to find
the secflavor for the initial mount.  If the server doesn't support
SECINFO_NO_NAME then I fall back on the "guess and check" method used
for v4.0 mounts.

Signed-off-by: Bryan Schumaker <bjschuma@netapp.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>

1 files changed, 8 insertions, 0 deletions

diff --git a/include/linux/nfs_xdr.h b/include/linux/nfs_xdr.h
index c4d98df884f3..7159e1da63b6 100644
--- a/include/linux/nfs_xdr.h
+++ b/include/linux/nfs_xdr.h
@@ -1084,6 +1084,14 @@ struct nfs41_reclaim_complete_args {
 struct nfs41_reclaim_complete_res {
         struct nfs4_sequence_res        seq_res;
 };
+
+#define SECINFO_STYLE_CURRENT_FH 0
+#define SECINFO_STYLE_PARENT 1
+struct nfs41_secinfo_no_name_args {
+        int                             style;
+        struct nfs4_sequence_args       seq_args;
+};
+
 #endif /* CONFIG_NFS_V4_1 */
 
 struct nfs_page;