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/**
* @file
* ICMP API
*/
/*
* Copyright (c) 2001-2004 Swedish Institute of Computer Science.
* 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 <adam@sics.se>
*
*/
#ifndef LWIP_HDR_ICMP_H
#define LWIP_HDR_ICMP_H
#include "lwip/opt.h"
#include "lwip/pbuf.h"
#include "lwip/ip_addr.h"
#include "lwip/netif.h"
#include "lwip/prot/icmp.h"
#if LWIP_IPV6 && LWIP_ICMP6
#include "lwip/icmp6.h"
#endif
#ifdef __cplusplus
extern "C" {
#endif
/** ICMP destination unreachable codes */
enum icmp_dur_type {
/** net unreachable */
ICMP_DUR_NET = 0,
/** host unreachable */
ICMP_DUR_HOST = 1,
/** protocol unreachable */
ICMP_DUR_PROTO = 2,
/** port unreachable */
ICMP_DUR_PORT = 3,
/** fragmentation needed and DF set */
ICMP_DUR_FRAG = 4,
/** source route failed */
ICMP_DUR_SR = 5
};
/** ICMP time exceeded codes */
enum icmp_te_type {
/** time to live exceeded in transit */
ICMP_TE_TTL = 0,
/** fragment reassembly time exceeded */
ICMP_TE_FRAG = 1
};
#if LWIP_IPV4 && LWIP_ICMP /* don't build if not configured for use in lwipopts.h */
void icmp_input(struct pbuf *p, struct netif *inp);
void icmp_dest_unreach(struct pbuf *p, enum icmp_dur_type t);
void icmp_time_exceeded(struct pbuf *p, enum icmp_te_type t);
#endif /* LWIP_IPV4 && LWIP_ICMP */
#if LWIP_IPV4 && LWIP_IPV6
#if LWIP_ICMP && LWIP_ICMP6
#define icmp_port_unreach(isipv6, pbuf) ((isipv6) ? \
icmp6_dest_unreach(pbuf, ICMP6_DUR_PORT) : \
icmp_dest_unreach(pbuf, ICMP_DUR_PORT))
#elif LWIP_ICMP
#define icmp_port_unreach(isipv6, pbuf) do{ if(!(isipv6)) { icmp_dest_unreach(pbuf, ICMP_DUR_PORT);}}while(0)
#elif LWIP_ICMP6
#define icmp_port_unreach(isipv6, pbuf) do{ if(isipv6) { icmp6_dest_unreach(pbuf, ICMP6_DUR_PORT);}}while(0)
#else
#define icmp_port_unreach(isipv6, pbuf)
#endif
#elif LWIP_IPV6 && LWIP_ICMP6
#define icmp_port_unreach(isipv6, pbuf) icmp6_dest_unreach(pbuf, ICMP6_DUR_PORT)
#elif LWIP_IPV4 && LWIP_ICMP
#define icmp_port_unreach(isipv6, pbuf) icmp_dest_unreach(pbuf, ICMP_DUR_PORT)
#else /* (LWIP_IPV6 && LWIP_ICMP6) || (LWIP_IPV4 && LWIP_ICMP) */
#define icmp_port_unreach(isipv6, pbuf)
#endif /* (LWIP_IPV6 && LWIP_ICMP6) || (LWIP_IPV4 && LWIP_ICMP) LWIP_IPV4*/
#ifdef __cplusplus
}
#endif
#endif /* LWIP_HDR_ICMP_H */