1/*
2 * INET		An implementation of the TCP/IP protocol suite for the LINUX
3 *		operating system.  NET  is implemented using the  BSD Socket
4 *		interface as the means of communication with the user level.
5 *
6 *		Definitions for the Ethernet handlers.
7 *
8 * Version:	@(#)eth.h	1.0.4	05/13/93
9 *
10 * Authors:	Ross Biro, <bir7@leland.Stanford.Edu>
11 *		Fred N. van Kempen, <waltje@uWalt.NL.Mugnet.ORG>
12 *
13 *		Relocated to include/linux where it belongs by Alan Cox
14 *							<gw4pts@gw4pts.ampr.org>
15 *
16 *		This program is free software; you can redistribute it and/or
17 *		modify it under the terms of the GNU General Public License
18 *		as published by the Free Software Foundation; either version
19 *		2 of the License, or (at your option) any later version.
20 *
21 *	WARNING: This move may well be temporary. This file will get merged with others RSN.
22 *
23 */
24#ifndef _LINUX_ETHERDEVICE_H
25#define _LINUX_ETHERDEVICE_H
26
27#include <linux/if_ether.h>
28
29#ifdef __KERNEL__
30extern int		eth_header(struct sk_buff *skb, struct net_device *dev,
31				   unsigned short type, void *daddr,
32				   void *saddr, unsigned len);
33extern int		eth_rebuild_header(struct sk_buff *skb);
34extern unsigned short	eth_type_trans(struct sk_buff *skb, struct net_device *dev);
35extern void		eth_header_cache_update(struct hh_cache *hh, struct net_device *dev,
36						unsigned char * haddr);
37extern int		eth_header_cache(struct neighbour *neigh,
38					 struct hh_cache *hh);
39extern int		eth_header_parse(struct sk_buff *skb,
40					 unsigned char *haddr);
41extern struct net_device *init_etherdev(struct net_device *dev, int sizeof_priv);
42extern struct net_device *alloc_etherdev(int sizeof_priv);
43
44static inline void eth_copy_and_sum (struct sk_buff *dest, unsigned char *src, int len, int base)
45{
46	memcpy (dest->data, src, len);
47}
48
49/**
50 * is_valid_ether_addr - Determine if the given Ethernet address is valid
51 * @addr: Pointer to a six-byte array containing the Ethernet address
52 *
53 * Check that the Ethernet address (MAC) is not 00:00:00:00:00:00, is not
54 * a multicast address, and is not FF:FF:FF:FF:FF:FF.  The multicast
55 * and FF:FF:... tests are combined into the single test "!(addr[0]&1)".
56 *
57 * Return true if the address is valid.
58 */
59static inline int is_valid_ether_addr( u8 *addr )
60{
61	const char zaddr[6] = {0,};
62
63	return !(addr[0]&1) && memcmp( addr, zaddr, 6);
64}
65
66#endif
67
68#endif	/* _LINUX_ETHERDEVICE_H */
69