LAYER_MPA
attrs.layer_etype = LAYER_MPA | DDP_LLP;
attrs.layer_etype = LAYER_MPA | DDP_LLP;
*layer_type = LAYER_MPA|DDP_LLP;
*layer_type = LAYER_MPA|DDP_LLP;
if (qhp->attr.layer_etype == (LAYER_MPA|DDP_LLP)) {
(LAYER_MPA << 4) | DDP_LLP, MPA_CRC);