ctl_ha_msg_mode
if (len < offsetof(struct ctl_ha_msg_mode, data[0])) {
__func__, len, offsetof(struct ctl_ha_msg_mode, data[0]));
if (len < offsetof(struct ctl_ha_msg_mode, data[i])) {
__func__, len, offsetof(struct ctl_ha_msg_mode, data[i]));
struct ctl_ha_msg_mode mode;