ifp->if_flags |= IFF_OACTIVE;

break;

}

if (ifp->if_bpf)

bpf_mtap(ifp, RL_CUR_TXMBUF(sc));

tmperror=myerror;/*在进行写IO口前先保存前面出错的原因*/

CSR_WRITE_4(sc, RL_CUR_TXADDR(sc),

vtophys(mtod(RL_CUR_TXMBUF(sc), caddr_t)));

CSR_WRITE_4(sc, RL_CUR_TXSTAT(sc),

RL_TXTHRESH(sc->rl_txthresh) |

RL_CUR_TXMBUF(sc)->m_pkthdr.len);

myerror=tmperror;/*上面两句没问题的话再还原前面的出错原因*/

RL_INC(sc->rl_cdata.cur_tx);

}

if (RL_CUR_TXMBUF(sc) != NULL)

ifp->if_flags |= IFF_OACTIVE;

ifp->if_timer = 5;

return;

}