eth_type_trans (9) Linux Manual Page
eth_type_trans – determine the packet’s protocol ID.
Synopsis
- __be16 eth_type_trans(struct sk_buff
* skb, struct net_device* dev);
Arguments
skb
-
- received socket data
dev
- receiving network device
Description
The rule here is that we assume 802.3 if the type field is short enough to be a length. This is normal practice and works for any ‘now in use’ protocol.