BGE_JLEN
m = MCLGETL(NULL, M_DONTWAIT, BGE_JLEN);
if (bus_dmamap_create(sc->bge_dmatag, BGE_JLEN, 4, BGE_JLEN, 0,
txmaxsegsz = BGE_JLEN;
sc->bge_rx_std_len = BGE_JLEN;
ifr[n].ifr_size = BGE_JLEN;