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