/*
       *	NET3:	802.3 data link hooks used for IPX 802.3
       *
       *	This program is free software; you can redistribute it and/or
       *	modify it under the terms of the GNU General Public License
       *	as published by the Free Software Foundation; either version
       *	2 of the License, or (at your option) any later version.
       *
       *	802.3 isn't really a protocol data link layer. Some old IPX stuff
       *	uses it however. Note that there is only one 802.3 protocol layer
       *	in the system. We don't currently support different protocols
       *	running raw 802.3 on different devices. Thankfully nobody else
       *	has done anything like the old IPX.
       */
       
      #include <linux/netdevice.h>
      #include <linux/skbuff.h>
      #include <net/datalink.h>
      #include <linux/mm.h>
      #include <linux/in.h>
      
      /*
       *	Place an 802.3 header on a packet. The driver will do the mac
       *	addresses, we just need to give it the buffer length.
       */
       
  27  static void p8023_datalink_header(struct datalink_proto *dl, 
      		struct sk_buff *skb, unsigned char *dest_node)
      {
      	struct net_device	*dev = skb->dev;
      	dev->hard_header(skb, dev, ETH_P_802_3, dest_node, NULL, skb->len);
      }
      
      /*
       *	Create an 802.3 client. Note there can be only one 802.3 client
       */
       
  38  struct datalink_proto *make_8023_client(void)
      {
      	struct datalink_proto	*proto;
      
      	proto = (struct datalink_proto *) kmalloc(sizeof(*proto), GFP_ATOMIC);
  43  	if (proto != NULL) 
      	{
      		proto->type_len = 0;
      		proto->header_length = 0;
      		proto->datalink_header = p8023_datalink_header;
      		proto->string_name = "802.3";
      	}
  50  	return proto;
      }
      
      /*
       *	Destroy the 802.3 client.
       */
       
  57  void destroy_8023_client(struct datalink_proto *dl)
      {
  59  	if (dl)
      		kfree(dl);
      }