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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>
- #include <linux/random.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 struct net_device *alloc_etherdev(int sizeof_priv);
- static inline void eth_copy_and_sum (struct sk_buff *dest,
- const 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( const u8 *addr )
- {
- const char zaddr[6] = {0,};
-
- return !(addr[0]&1) && memcmp( addr, zaddr, 6);
- }
-
- /**
- * random_ether_addr - Generate software assigned random Ethernet address
- * @addr: Pointer to a six-byte array containing the Ethernet address
- *
- * Generate a random Ethernet address (MAC) that is not multicast
- * and has the local assigned bit set.
- */
- static inline void random_ether_addr(u8 *addr)
- {
- get_random_bytes (addr, ETH_ALEN);
- addr [0] &= 0xfe; /* clear multicast bit */
- addr [0] |= 0x02; /* set local assignment bit (IEEE802) */
- }
- #endif
-
- #endif /* _LINUX_ETHERDEVICE_H */
-