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/*
* INET An implementation of the TCP/IP protocol suite for the LINUX
* operating system. NET is implemented using the BSD Socket
* interface as the means of communication with the user level.
*
* Definitions for the Ethernet handlers.
*
* Version: @(#)eth.h 1.0.4 05/13/93
*
* Authors: Ross Biro, <bir7@leland.Stanford.Edu>
* Fred N. van Kempen, <waltje@uWalt.NL.Mugnet.ORG>
*
* Relocated to include/linux where it belongs by Alan Cox
* <gw4pts@gw4pts.ampr.org>
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version
* 2 of the License, or (at your option) any later version.
*
* WARNING: This move may well be temporary. This file will get merged with others RSN.
*
*/
#ifndef _LINUX_ETHERDEVICE_H
#define _LINUX_ETHERDEVICE_H
#include <linux/if_ether.h>
#ifdef __KERNEL__
extern int eth_header(struct sk_buff *skb, struct net_device *dev,
unsigned short type, void *daddr,
void *saddr, unsigned len);
extern int eth_rebuild_header(struct sk_buff *skb);
extern unsigned short eth_type_trans(struct sk_buff *skb, struct net_device *dev);
extern void eth_header_cache_update(struct hh_cache *hh, struct net_device *dev,
unsigned char * haddr);
extern int eth_header_cache(struct neighbour *neigh,
struct hh_cache *hh);
extern int eth_header_parse(struct sk_buff *skb,
unsigned char *haddr);
extern struct net_device *init_etherdev(struct net_device *dev, int sizeof_priv);
extern struct net_device *alloc_etherdev(int sizeof_priv);
static inline void eth_copy_and_sum (struct sk_buff *dest, unsigned char *src, int len, int base)
{
memcpy (dest->data, src, len);
}
/**
* is_valid_ether_addr - Determine if the given Ethernet address is valid
* @addr: Pointer to a six-byte array containing the Ethernet address
*
* Check that the Ethernet address (MAC) is not 00:00:00:00:00:00, is not
* a multicast address, and is not FF:FF:FF:FF:FF:FF. The multicast
* and FF:FF:... tests are combined into the single test "!(addr[0]&1)".
*
* Return true if the address is valid.
*/
static inline int is_valid_ether_addr( u8 *addr )
{
const char zaddr[6] = {0,};
return !(addr[0]&1) && memcmp( addr, zaddr, 6);
}
#endif
#endif /* _LINUX_ETHERDEVICE_H */
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