XNF_MCLEN
nsegs = roundup(ifp->if_hardmtu, XNF_MCLEN) / XNF_MCLEN + 1;
segsz = nsegs * XNF_MCLEN;
segsz = XNF_MCLEN;
if (bus_dmamap_create(sc->sc_dmat, segsz, nsegs, XNF_MCLEN,
m = MCLGETL(NULL, M_DONTWAIT, XNF_MCLEN);
m->m_len = m->m_pkthdr.len = XNF_MCLEN;
if (bus_dmamap_create(sc->sc_dmat, XNF_MCLEN, 1, XNF_MCLEN,