IPW_MAX_NSEG      466 dev/pci/if_ipw.c 		error = bus_dmamap_create(sc->sc_dmat, MCLBYTES, IPW_MAX_NSEG,
IPW_MAX_NSEG     1311 dev/pci/if_ipw.c 		if (sc->txfree < 1 + IPW_MAX_NSEG) {