dl_notify_conf_t
mp = mexchange(NULL, NULL, sizeof (dl_notify_conf_t), M_PROTO,
((dl_notify_conf_t *)(mp->b_rptr))->dl_notification =
mp = mexchange(NULL, mp, sizeof (dl_notify_conf_t), M_PROTO,
((dl_notify_conf_t *)mp->b_rptr)->dl_notification =
if (MBLKL(mp) < sizeof (dl_notify_conf_t) ||
((dl_notify_conf_t *)mp->b_rptr)->dl_notification !=
dl_notify_conf_t notify_conf;
#define DL_NOTIFY_CONF_SIZE sizeof (dl_notify_conf_t)