commit9200f515c4upstream. A different TPID bit is used for 802.1ad VLAN frames. Reported-by: Ilario Gelmetti <iochesonome@gmail.com> Fixes:f0af34317f("net: dsa: mediatek: combine MediaTek tag with VLAN tag") Signed-off-by: DENG Qingfang <dqfext@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>