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