Kernel modules fail to compile on latest RHEL 6.8 kernel

[GabrielVlasiu]

  CC [M]  /var/lib/dkms/vboxhost/5.0.18-1.centos6g/build/vboxnetflt/linux/VBoxNetFlt-linux.o
/var/lib/dkms/vboxhost/5.0.18-1.centos6g/build/vboxnetflt/linux/VBoxNetFlt-linux.c: In function ‘vboxNetFltLinuxPacketHandler’:
/var/lib/dkms/vboxhost/5.0.18-1.centos6g/build/vboxnetflt/linux/VBoxNetFlt-linux.c:939: error: implicit declaration of function ‘vlan_tx_tag_present’
/var/lib/dkms/vboxhost/5.0.18-1.centos6g/build/vboxnetflt/linux/VBoxNetFlt-linux.c:949: error: implicit declaration of function ‘vlan_tx_tag_get’
make[2]: *** [/var/lib/dkms/vboxhost/5.0.18-1.centos6g/build/vboxnetflt/linux/VBoxNetFlt-linux.o] Error 1
make[1]: *** [/var/lib/dkms/vboxhost/5.0.18-1.centos6g/build/vboxnetflt] Error 2
make: *** [_module_/var/lib/dkms/vboxhost/5.0.18-1.centos6g/build] Error 2
make: Leaving directory `/usr/src/kernels/2.6.32-642.el6.x86_64'

# uname -r 2.6.32-642.el6.x86_64

Changing vlan_tx_tag_get to skb_vlan_tag_get and vlan_tx_tag_present to skb_vlan_tag_present allowed kernel module to be built and function. Maybe changeset 58845 should also include RHEL 6.8.

[Frank Mehnert]

Duplicate of #15411.