1/*
2 *	NET3:	802.3 data link hooks used for IPX 802.3
3 *
4 *	This program is free software; you can redistribute it and/or
5 *	modify it under the terms of the GNU General Public License
6 *	as published by the Free Software Foundation; either version
7 *	2 of the License, or (at your option) any later version.
8 *
9 *	802.3 isn't really a protocol data link layer. Some old IPX stuff
10 *	uses it however. Note that there is only one 802.3 protocol layer
11 *	in the system. We don't currently support different protocols
12 *	running raw 802.3 on different devices. Thankfully nobody else
13 *	has done anything like the old IPX.
14 */
15
16#include <linux/netdevice.h>
17#include <linux/skbuff.h>
18#include <net/datalink.h>
19#include <linux/mm.h>
20#include <linux/in.h>
21
22/*
23 *	Place an 802.3 header on a packet. The driver will do the mac
24 *	addresses, we just need to give it the buffer length.
25 */
26
27static void p8023_datalink_header(struct datalink_proto *dl,
28		struct sk_buff *skb, unsigned char *dest_node)
29{
30	struct net_device	*dev = skb->dev;
31	dev->hard_header(skb, dev, ETH_P_802_3, dest_node, NULL, skb->len);
32}
33
34/*
35 *	Create an 802.3 client. Note there can be only one 802.3 client
36 */
37
38struct datalink_proto *make_8023_client(void)
39{
40	struct datalink_proto	*proto;
41
42	proto = (struct datalink_proto *) kmalloc(sizeof(*proto), GFP_ATOMIC);
43	if (proto != NULL)
44	{
45		proto->type_len = 0;
46		proto->header_length = 0;
47		proto->datalink_header = p8023_datalink_header;
48		proto->string_name = "802.3";
49	}
50	return proto;
51}
52
53/*
54 *	Destroy the 802.3 client.
55 */
56
57void destroy_8023_client(struct datalink_proto *dl)
58{
59	if (dl)
60		kfree(dl);
61}
62
63