1 files changed, 59 insertions, 0 deletions
diff --git a/include/net/arp.h b/include/net/arp.h
new file mode 100644
index 00000000..4a1f3fb5
--- /dev/null
+++ b/include/net/arp.h
@@ -0,0 +1,59 @@
+/* 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;
+}
+
+static inline struct neighbour *__ipv4_neigh_lookup(struct net_device *dev, u32 key)
+{
+	struct neigh_hash_table *nht;
+	struct neighbour *n;
+	u32 hash_val;
+
+	rcu_read_lock_bh();
+	nht = rcu_dereference_bh(arp_tbl.nht);
+	hash_val = arp_hashfn(key, dev, nht->hash_rnd[0]) >> (32 - nht->hash_shift);
+	for (n = rcu_dereference_bh(nht->hash_buckets[hash_val]);
+	     n != NULL;
+	     n = rcu_dereference_bh(n->next)) {
+		if (n->dev == dev && *(u32 *)n->primary_key == key) {
+			if (!atomic_inc_not_zero(&n->refcnt))
+				n = NULL;
+			break;
+		}
+	}
+	rcu_read_unlock_bh();
+
+	return n;
+}
+
+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_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 */