diff --git a/qdf/inc/qdf_types.h b/qdf/inc/qdf_types.h
index c588f529642b..1274d505f107 100644
--- a/qdf/inc/qdf_types.h
+++ b/qdf/inc/qdf_types.h
@@ -454,6 +454,7 @@ struct qdf_tso_frag_t {
 };
 
 #define FRAG_NUM_MAX 6
+#define TSO_SEG_MAGIC_COOKIE 0x7EED
 
 /**
  * struct qdf_tso_flags_t - TSO specific flags
@@ -530,6 +531,8 @@ struct qdf_tso_seg_t {
  */
 struct qdf_tso_seg_elem_t {
 	struct qdf_tso_seg_t seg;
+	uint16_t cookie:15,
+		on_freelist:1;
 	struct qdf_tso_seg_elem_t *next;
 };