blob: 19cd56990db256ac5c9d6d210d400e5e5394621b [file] [log] [blame]
Thomas Gleixner2874c5f2019-05-27 08:55:01 +02001// SPDX-License-Identifier: GPL-2.0-or-later
Linus Torvalds1da177e2005-04-16 15:20:36 -07002/*
3 * NET3: 802.3 data link hooks used for IPX 802.3
4 *
Linus Torvalds1da177e2005-04-16 15:20:36 -07005 * 802.3 isn't really a protocol data link layer. Some old IPX stuff
6 * uses it however. Note that there is only one 802.3 protocol layer
7 * in the system. We don't currently support different protocols
8 * running raw 802.3 on different devices. Thankfully nobody else
9 * has done anything like the old IPX.
10 */
11
12#include <linux/in.h>
13#include <linux/mm.h>
14#include <linux/module.h>
15#include <linux/netdevice.h>
16#include <linux/skbuff.h>
Tejun Heo5a0e3ad2010-03-24 17:04:11 +090017#include <linux/slab.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070018
19#include <net/datalink.h>
Arnaldo Carvalho de Melo20380732005-08-16 02:18:02 -030020#include <net/p8022.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070021
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 */
26static int p8023_request(struct datalink_proto *dl,
27 struct sk_buff *skb, unsigned char *dest_node)
28{
29 struct net_device *dev = skb->dev;
30
Stephen Hemminger0c4e8582007-10-09 01:36:32 -070031 dev_hard_header(skb, dev, ETH_P_802_3, dest_node, NULL, skb->len);
Linus Torvalds1da177e2005-04-16 15:20:36 -070032 return dev_queue_xmit(skb);
33}
34
35/*
36 * Create an 802.3 client. Note there can be only one 802.3 client
37 */
38struct datalink_proto *make_8023_client(void)
39{
40 struct datalink_proto *proto = kmalloc(sizeof(*proto), GFP_ATOMIC);
41
42 if (proto) {
43 proto->header_length = 0;
44 proto->request = p8023_request;
45 }
46 return proto;
47}
48
49/*
50 * Destroy the 802.3 client.
51 */
52void destroy_8023_client(struct datalink_proto *dl)
53{
Jesper Juhla51482b2005-11-08 09:41:34 -080054 kfree(dl);
Linus Torvalds1da177e2005-04-16 15:20:36 -070055}
56
57EXPORT_SYMBOL(destroy_8023_client);
58EXPORT_SYMBOL(make_8023_client);
Dave Jones99e382a2006-02-13 15:38:42 -080059
60MODULE_LICENSE("GPL");