What is it needed to support new L2 header[SGT Secure Group Tag which is of eth type 0x8909] in Linux kernel

1. should be able to support parsing eth type 0x8909
2. should be able to maintain mappping of ip to tag
3. should be able to parse the sgt header for incomming packets
4. should be able to add sgt header for outgoing packets.

New to kernel programming. Any help or pointers would be helpful.