WX_VT_MSGINFO_SHIFT
>> WX_VT_MSGINFO_SHIFT;
int add = (msgbuf[0] & WX_VT_MSGINFO_MASK) >> WX_VT_MSGINFO_SHIFT;
WX_VT_MSGINFO_SHIFT;
msgbuf[0] |= cnt << WX_VT_MSGINFO_SHIFT;
msgbuf[0] |= vlan_on << WX_VT_MSGINFO_SHIFT;
msgbuf[0] |= index << WX_VT_MSGINFO_SHIFT;