ifbrp_hellotime
ht = param.ifbrp_hellotime;
param.ifbrp_hellotime = val & 0xff;
param->ifbrp_hellotime = sc->sc_bridge_hello_time >> 8;
if (param->ifbrp_hellotime == 0)
sc->sc_bridge_hello_time = param->ifbrp_hellotime << 8;