VLAN_VID_MASK      64 include/linux/if_vlan.h #define VLAN_VID_MASK		0x0fff /* VLAN Identifier */
VLAN_VID_MASK      42 tools/testing/selftests/bpf/progs/test_xdp_vlan.c #define VLAN_VID_MASK		0x0fff /* VLAN Identifier */