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/* linux/net/inet/arp.h */
#ifndef _ARP_H
#define _ARP_H

#include <linux/if_arp.h>
#include <net/neighbour.h>


extern struct neigh_table arp_tbl;

static inline u32 arp_hashfn(u32 key, const struct net_device *dev, u32 hash_rnd)
{
	u32 val = key ^ dev->ifindex;

	return val * hash_rnd;
}

extern void	arp_init(void);
extern int	arp_find(unsigned char *haddr, struct sk_buff *skb);
extern int	arp_ioctl(struct net *net, unsigned int cmd, void __user *arg);
extern void     arp_send(int type, int ptype, __be32 dest_ip,
			 struct net_device *dev, __be32 src_ip,
			 const unsigned char *dest_hw,
			 const unsigned char *src_hw, const unsigned char *th);
extern int	arp_bind_neighbour(struct dst_entry *dst);
extern int	arp_mc_map(__be32 addr, u8 *haddr, struct net_device *dev, int dir);
extern void	arp_ifdown(struct net_device *dev);

extern struct sk_buff *arp_create(int type, int ptype, __be32 dest_ip,
				  struct net_device *dev, __be32 src_ip,
				  const unsigned char *dest_hw,
				  const unsigned char *src_hw,
				  const unsigned char *target_hw);
extern void arp_xmit(struct sk_buff *skb);
int arp_invalidate(struct net_device *dev, __be32 ip);

#endif	/* _ARP_H */

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