ie_xmit_status
xc.ie_xmit_status = 0x0000;
READ_MEMBER(sc,struct ie_xmit_cmd, ie_xmit_status,
xmcmd.ie_xmit_status = IE_STAT_COMPL;
status = sc->xmit_cmds[sc->xctail]->ie_xmit_status;
sc->xmit_cmds[sc->xctail]->ie_xmit_status = SWAP(0);