tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
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/in.h>
17#include <linux/mm.h>
18#include <linux/module.h>
19#include <linux/netdevice.h>
20#include <linux/skbuff.h>
21
22#include <net/datalink.h>
23#include <net/p8022.h>
24
25/*
26 * Place an 802.3 header on a packet. The driver will do the mac
27 * addresses, we just need to give it the buffer length.
28 */
29static int p8023_request(struct datalink_proto *dl,
30 struct sk_buff *skb, unsigned char *dest_node)
31{
32 struct net_device *dev = skb->dev;
33
34 dev->hard_header(skb, dev, ETH_P_802_3, dest_node, NULL, skb->len);
35 return dev_queue_xmit(skb);
36}
37
38/*
39 * Create an 802.3 client. Note there can be only one 802.3 client
40 */
41struct datalink_proto *make_8023_client(void)
42{
43 struct datalink_proto *proto = kmalloc(sizeof(*proto), GFP_ATOMIC);
44
45 if (proto) {
46 proto->header_length = 0;
47 proto->request = p8023_request;
48 }
49 return proto;
50}
51
52/*
53 * Destroy the 802.3 client.
54 */
55void destroy_8023_client(struct datalink_proto *dl)
56{
57 kfree(dl);
58}
59
60EXPORT_SYMBOL(destroy_8023_client);
61EXPORT_SYMBOL(make_8023_client);
62
63MODULE_LICENSE("GPL");