IFM_TMASK
ifmr->ifm_current = (ifmr->ifm_current & ~(IFM_NMASK|IFM_TMASK)) |
if ((ifmr->ifm_current & IFM_TMASK) == 0)
media &= ~(IFM_ETH_XTYPE|IFM_TMASK);
#define IFM_ETHER_SUBTYPE(x) (((x) & IFM_TMASK) | \
#define IFM_ETHER_SUBTYPE_GET(x) ((x) & (IFM_TMASK | IFM_ETH_XTYPE))
IFM_ETHER_SUBTYPE_GET(x) : ((x) & IFM_TMASK))