DESC_FLAG
d_flag = DESC_FLAG(ri->ri_nextin);
if (DESC_FLAG(ri->ri_nextin) & TULIP_DFLAG_TxINVRSFILT)
DESC_FLAG(eop) |= TULIP_DFLAG_TxLASTSEG|TULIP_DFLAG_TxWANTINTR;
DESC_FLAG(ri->ri_nextout) |= TULIP_DFLAG_TxFIRSTSEG;
DESC_FLAG(&ri->ri_last[-1]) = TULIP_DFLAG_ENDRING;