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