tl_stats
struct tl_stats tl_stats;
bzero(&tl_stats, sizeof(struct tl_stats));
p = (u_int32_t *)&tl_stats;
ifp->if_collisions += tl_stats.tl_tx_single_collision +
tl_stats.tl_tx_multi_collision;
ifp->if_ierrors += tl_stats.tl_crc_errors + tl_stats.tl_code_errors +
tl_rx_overrun(tl_stats);
ifp->if_oerrors += tl_tx_underrun(tl_stats);
if (tl_tx_underrun(tl_stats)) {