Name

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.