1 files changed, 5 insertions, 0 deletions
diff --git a/fs/cifs/cifsglob.h b/fs/cifs/cifsglob.h
index 6c8293314530..ae7f571a7dba 100644
--- a/fs/cifs/cifsglob.h
+++ b/fs/cifs/cifsglob.h
@@ -752,6 +752,11 @@ struct TCP_Server_Info {
 #endif
 };
 
+static inline bool is_smb1(struct TCP_Server_Info *server)
+{
+	return HEADER_PREAMBLE_SIZE(server) != 0;
+}
+
 static inline void cifs_server_lock(struct TCP_Server_Info *server)
 {
 	unsigned int nofs_flag = memalloc_nofs_save();