c939f1aee7
the mbuf contains the ethernet header (eh) as well, which ether_input() will strip off as needed. This permits the removal (in a backward compatible way) of the header removal code which right now is replicated in all drivers, sometimes in an inconsistent way. Also, because many functions called after ether_input() require the eh in the mbuf, eventually we can propagate the interface and handle outdated drivers just in ether_input(). Individual driver changes to use the new interface will follow as we have a chance to touch them. NOTE THAT THIS CHANGE IS FULLY BACKWARD COMPATIBLE AND DOES NOT BREAK BINARY COMPATIBILITY FOR DRIVERS. MFC after: 3 days