ifbrp_fwddelay
fd = param.ifbrp_fwddelay;
param.ifbrp_fwddelay = val & 0xff;
param->ifbrp_fwddelay = sc->sc_bridge_forward_delay >> 8;
if (param->ifbrp_fwddelay == 0)
sc->sc_bridge_forward_delay = param->ifbrp_fwddelay << 8;