/**
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* @file
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* ICMP API
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*/
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/*
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* Copyright (c) 2001-2004 Swedish Institute of Computer Science.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without modification,
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* are permitted provided that the following conditions are met:
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*
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* 1. Redistributions of source code must retain the above copyright notice,
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* this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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* 3. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
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* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT
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* SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
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* OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
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* IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
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* OF SUCH DAMAGE.
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*
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* This file is part of the lwIP TCP/IP stack.
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*
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* Author: Adam Dunkels <adam@sics.se>
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*
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*/
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#ifndef LWIP_HDR_ICMP_H
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#define LWIP_HDR_ICMP_H
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#include "lwip/opt.h"
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#include "lwip/pbuf.h"
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#include "lwip/ip_addr.h"
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#include "lwip/netif.h"
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#include "lwip/prot/icmp.h"
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#if LWIP_IPV6 && LWIP_ICMP6
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#include "lwip/icmp6.h"
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#endif
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#ifdef __cplusplus
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extern "C" {
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#endif
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/** ICMP destination unreachable codes */
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enum icmp_dur_type {
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/** net unreachable */
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ICMP_DUR_NET = 0,
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/** host unreachable */
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ICMP_DUR_HOST = 1,
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/** protocol unreachable */
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ICMP_DUR_PROTO = 2,
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/** port unreachable */
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ICMP_DUR_PORT = 3,
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/** fragmentation needed and DF set */
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ICMP_DUR_FRAG = 4,
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/** source route failed */
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ICMP_DUR_SR = 5
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};
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/** ICMP time exceeded codes */
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enum icmp_te_type {
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/** time to live exceeded in transit */
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ICMP_TE_TTL = 0,
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/** fragment reassembly time exceeded */
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ICMP_TE_FRAG = 1
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};
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#if LWIP_IPV4 && LWIP_ICMP /* don't build if not configured for use in lwipopts.h */
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void icmp_input(struct pbuf *p, struct netif *inp);
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void icmp_dest_unreach(struct pbuf *p, enum icmp_dur_type t);
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void icmp_time_exceeded(struct pbuf *p, enum icmp_te_type t);
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#endif /* LWIP_IPV4 && LWIP_ICMP */
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#if LWIP_IPV4 && LWIP_IPV6
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#if LWIP_ICMP && LWIP_ICMP6
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#define icmp_port_unreach(isipv6, pbuf) ((isipv6) ? \
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icmp6_dest_unreach(pbuf, ICMP6_DUR_PORT) : \
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icmp_dest_unreach(pbuf, ICMP_DUR_PORT))
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#elif LWIP_ICMP
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#define icmp_port_unreach(isipv6, pbuf) do{ if(!(isipv6)) { icmp_dest_unreach(pbuf, ICMP_DUR_PORT);}}while(0)
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#elif LWIP_ICMP6
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#define icmp_port_unreach(isipv6, pbuf) do{ if(isipv6) { icmp6_dest_unreach(pbuf, ICMP6_DUR_PORT);}}while(0)
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#else
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#define icmp_port_unreach(isipv6, pbuf)
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#endif
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#elif LWIP_IPV6 && LWIP_ICMP6
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#define icmp_port_unreach(isipv6, pbuf) icmp6_dest_unreach(pbuf, ICMP6_DUR_PORT)
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#elif LWIP_IPV4 && LWIP_ICMP
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#define icmp_port_unreach(isipv6, pbuf) icmp_dest_unreach(pbuf, ICMP_DUR_PORT)
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#else /* (LWIP_IPV6 && LWIP_ICMP6) || (LWIP_IPV4 && LWIP_ICMP) */
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#define icmp_port_unreach(isipv6, pbuf)
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#endif /* (LWIP_IPV6 && LWIP_ICMP6) || (LWIP_IPV4 && LWIP_ICMP) LWIP_IPV4*/
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#ifdef __cplusplus
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}
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#endif
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#endif /* LWIP_HDR_ICMP_H */
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