RING_END
cur_tx->se_flags &= htole32(RING_END);
desc->se_flags |= htole32(RING_END);
ld->se_tx_ring[SE_TX_RING_CNT - 1].se_flags = htole32(RING_END);
desc->se_flags |= htole32(RING_END);
desc->se_flags |= htole32(RING_END);