FreeRTOS/Common/ethernet/lwIP_130/src/include/ipv6/lwip/icmp.h

   1 /*
   2  * Copyright (c) 2001-2004 Swedish Institute of Computer Science.
   3  * All rights reserved.
   4  *
   5  * Redistribution and use in source and binary forms, with or without modification,
   6  * are permitted provided that the following conditions are met:
   7  *
   8  * 1. Redistributions of source code must retain the above copyright notice,
   9  *    this list of conditions and the following disclaimer.
  10  * 2. Redistributions in binary form must reproduce the above copyright notice,
  11  *    this list of conditions and the following disclaimer in the documentation
  12  *    and/or other materials provided with the distribution.
  13  * 3. The name of the author may not be used to endorse or promote products
  14  *    derived from this software without specific prior written permission.
  15  *
  16  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
  17  * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
  18  * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT
  19  * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
  20  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
  21  * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  22  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  23  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
  24  * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
  25  * OF SUCH DAMAGE.
  26  *
  27  * This file is part of the lwIP TCP/IP stack.
  28  *
  29  * Author: Adam Dunkels <adam@sics.se>
  30  *
  31  */
  32 #ifndef __LWIP_ICMP_H__
  33 #define __LWIP_ICMP_H__
  34
  35 #include "lwip/opt.h"
  36
  37 #if LWIP_ICMP /* don't build if not configured for use in lwipopts.h */
  38
  39 #include "lwip/pbuf.h"
  40 #include "lwip/netif.h"
  41
  42 #ifdef __cplusplus
  43 extern "C" {
  44 #endif
  45
  46 #define ICMP6_DUR  1
  47 #define ICMP6_TE   3
  48 #define ICMP6_ECHO 128    /* echo */
  49 #define ICMP6_ER   129      /* echo reply */
  50
  51
  52 enum icmp_dur_type {
  53   ICMP_DUR_NET = 0,    /* net unreachable */
  54   ICMP_DUR_HOST = 1,   /* host unreachable */
  55   ICMP_DUR_PROTO = 2,  /* protocol unreachable */
  56   ICMP_DUR_PORT = 3,   /* port unreachable */
  57   ICMP_DUR_FRAG = 4,   /* fragmentation needed and DF set */
  58   ICMP_DUR_SR = 5      /* source route failed */
  59 };
  60
  61 enum icmp_te_type {
  62   ICMP_TE_TTL = 0,     /* time to live exceeded in transit */
  63   ICMP_TE_FRAG = 1     /* fragment reassembly time exceeded */
  64 };
  65
  66 void icmp_input(struct pbuf *p, struct netif *inp);
  67
  68 void icmp_dest_unreach(struct pbuf *p, enum icmp_dur_type t);
  69 void icmp_time_exceeded(struct pbuf *p, enum icmp_te_type t);
  70
  71 struct icmp_echo_hdr {
  72   u8_t type;
  73   u8_t icode;
  74   u16_t chksum;
  75   u16_t id;
  76   u16_t seqno;
  77 };
  78
  79 struct icmp_dur_hdr {
  80   u8_t type;
  81   u8_t icode;
  82   u16_t chksum;
  83   u32_t unused;
  84 };
  85
  86 struct icmp_te_hdr {
  87   u8_t type;
  88   u8_t icode;
  89   u16_t chksum;
  90   u32_t unused;
  91 };
  92
  93 #ifdef __cplusplus
  94 }
  95 #endif
  96
  97 #endif /* LWIP_ICMP */
  98
  99 #endif /* __LWIP_ICMP_H__ */
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