REG_ING_FFILT_UM_EN
vsc_read(mac->adapter, REG_ING_FFILT_UM_EN, &val);
vsc_write(mac->adapter, REG_ING_FFILT_UM_EN, val | (port << 28));
vsc_read(mac->adapter, REG_ING_FFILT_UM_EN, &v);
vsc_write(mac->adapter, REG_ING_FFILT_UM_EN, v);