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//
// arp.h
//
// Address Resolution Protocol (ARP)
//
// Copyright (C) 2002 Michael Ringgaard. All rights reserved.
// Portions Copyright (C) 2001, Swedish Institute of Computer Science.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions
// are met:
// 
// 1. Redistributions of source code must retain the above copyright 
//    notice, this list of conditions and the following disclaimer.  
// 2. Redistributions in binary form must reproduce the above copyright
//    notice, this list of conditions and the following disclaimer in the
//    documentation and/or other materials provided with the distribution.  
// 3. Neither the name of the project nor the names of its contributors
//    may be used to endorse or promote products derived from this software
//    without specific prior written permission. 
// 
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
// ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
// ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE
// FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
// DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
// OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
// HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
// LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
// OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 
// SUCH DAMAGE.
// 

#ifndef ARP_H
#define ARP_H

#define ETHTYPE_ARP 0x0806
#define ETHTYPE_IP  0x0800

void arp_init();
void arp_ip_input(struct netif *netif, struct pbuf *p);
struct pbuf *arp_arp_input(struct netif *netif, struct eth_addr *ethaddr, struct pbuf *p);
struct eth_addr *arp_lookup(struct ip_addr *ipaddr);
struct pbuf *arp_query(struct netif *netif, struct eth_addr *ethaddr, struct ip_addr *ipaddr);
int arp_queue(struct netif *netif, struct pbuf *p, struct ip_addr *ipaddr);

#endif