www.pudn.com > TCPmodbushy.rar > etharp.h

/* 
 * Copyright (c) 2001-2003 Swedish Institute of Computer Science. 
 * Copyright (c) 2003-2004 Leon Woestenberg  
 * Copyright (c) 2003-2004 Axon Digital Design B.V., The Netherlands. 
 * All rights reserved.  
 *  
 * 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. The name of the author may not be used to endorse or promote products 
 *    derived from this software without specific prior written permission.  
 * 
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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. 
 * 
 * This file is part of the lwIP TCP/IP stack. 
 *  
 * Author: Adam Dunkels  
 * 
 */ 
 
#ifndef __NETIF_ETHARP_H__ 
#define __NETIF_ETHARP_H__ 
 
#ifndef ETH_PAD_SIZE 
#define ETH_PAD_SIZE 0 
#endif 
 
#include "o:/lwip/pbuf.h" 
#include "o:/IPV4/lwip/ip_addr.h" 
#include "o:/lwip/netif.h" 
#include "o:/IPV4/lwip/ip.h" 
 
#ifdef PACK_STRUCT_USE_INCLUDES 
#  include "arch/bpstruct.h" 
#endif 
PACK_STRUCT_BEGIN 
struct eth_addr { 
  PACK_STRUCT_FIELD(u8_t addr[6]); 
} PACK_STRUCT_STRUCT; 
PACK_STRUCT_END 
#ifdef PACK_STRUCT_USE_INCLUDES 
#  include "arch/epstruct.h" 
#endif 
 
#ifdef PACK_STRUCT_USE_INCLUDES 
#  include "arch/bpstruct.h" 
#endif 
PACK_STRUCT_BEGIN 
struct eth_hdr { 
#if ETH_PAD_SIZE 
  PACK_STRUCT_FIELD(u8_t padding[ETH_PAD_SIZE]); 
#endif 
  PACK_STRUCT_FIELD(struct eth_addr dest); 
  PACK_STRUCT_FIELD(struct eth_addr src); 
  PACK_STRUCT_FIELD(u16_t type); 
} PACK_STRUCT_STRUCT; 
PACK_STRUCT_END 
#ifdef PACK_STRUCT_USE_INCLUDES 
#  include "arch/epstruct.h" 
#endif 
 
#ifdef PACK_STRUCT_USE_INCLUDES 
#  include "arch/bpstruct.h" 
#endif 
PACK_STRUCT_BEGIN 
/** the ARP message */ 
struct etharp_hdr { 
  PACK_STRUCT_FIELD(struct eth_hdr ethhdr); 
  PACK_STRUCT_FIELD(u16_t hwtype); 
  PACK_STRUCT_FIELD(u16_t proto); 
  PACK_STRUCT_FIELD(u16_t _hwlen_protolen); 
  PACK_STRUCT_FIELD(u16_t opcode); 
  PACK_STRUCT_FIELD(struct eth_addr shwaddr); 
  PACK_STRUCT_FIELD(struct ip_addr2 sipaddr); 
  PACK_STRUCT_FIELD(struct eth_addr dhwaddr); 
  PACK_STRUCT_FIELD(struct ip_addr2 dipaddr); 
} PACK_STRUCT_STRUCT; 
PACK_STRUCT_END 
#ifdef PACK_STRUCT_USE_INCLUDES 
#  include "arch/epstruct.h" 
#endif 
 
#ifdef PACK_STRUCT_USE_INCLUDES 
#  include "arch/bpstruct.h" 
#endif 
PACK_STRUCT_BEGIN 
struct ethip_hdr { 
  PACK_STRUCT_FIELD(struct eth_hdr eth); 
  PACK_STRUCT_FIELD(struct ip_hdr ip); 
} PACK_STRUCT_STRUCT; 
PACK_STRUCT_END 
#ifdef PACK_STRUCT_USE_INCLUDES 
#  include "arch/epstruct.h" 
#endif 
 
/** 5 seconds period */ 
#define ARP_TMR_INTERVAL 5000 
 
#define ETHTYPE_ARP 0x0806 
#define ETHTYPE_IP  0x0800 
 
void etharp_init(void); 
void etharp_tmr(void); 
void etharp_ip_input(struct pbuf xdata *p); 
void etharp_arp_input(struct eth_addr xdata *ethaddr, struct pbuf xdata *p); 
err_t etharp_output(struct ip_addr xdata *ipaddr, struct pbuf xdata *q); 
err_t etharp_query(struct ip_addr xdata *ipaddr, struct pbuf xdata *q); 
err_t etharp_request(struct ip_addr xdata *ipaddr); 
 
#endif /* __NETIF_ARP_H__ */