// SPDX-License-Identifier: GPL-2.0-or-later

  /*
   *	NET3:	802.3 data link hooks used for IPX 802.3
   *

   *	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/in.h>
  #include <linux/mm.h>
  #include <linux/module.h>
  #include <linux/netdevice.h>
  #include <linux/skbuff.h>

  #include <linux/slab.h>

  
  #include <net/datalink.h>

  #include <net/p8022.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.
   */
  static int p8023_request(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);

  	return dev_queue_xmit(skb);
  }
  
  /*
   *	Create an 802.3 client. Note there can be only one 802.3 client
   */
  struct datalink_proto *make_8023_client(void)
  {
  	struct datalink_proto *proto = kmalloc(sizeof(*proto), GFP_ATOMIC);
  
  	if (proto) {
  		proto->header_length = 0;
  		proto->request	     = p8023_request;
  	}
  	return proto;
  }
  
  /*
   *	Destroy the 802.3 client.
   */
  void destroy_8023_client(struct datalink_proto *dl)
  {

  	kfree(dl);

  }
  
  EXPORT_SYMBOL(destroy_8023_client);
  EXPORT_SYMBOL(make_8023_client);

  
  MODULE_LICENSE("GPL");