1 | /**
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2 | * @file
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3 | * ICMP API
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4 | */
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5 |
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6 | /*
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7 | * Copyright (c) 2001-2004 Swedish Institute of Computer Science.
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8 | * All rights reserved.
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9 | *
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10 | * Redistribution and use in source and binary forms, with or without modification,
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11 | * are permitted provided that the following conditions are met:
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12 | *
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13 | * 1. Redistributions of source code must retain the above copyright notice,
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14 | * this list of conditions and the following disclaimer.
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15 | * 2. Redistributions in binary form must reproduce the above copyright notice,
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16 | * this list of conditions and the following disclaimer in the documentation
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17 | * and/or other materials provided with the distribution.
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18 | * 3. The name of the author may not be used to endorse or promote products
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19 | * derived from this software without specific prior written permission.
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20 | *
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21 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
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22 | * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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23 | * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT
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24 | * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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25 | * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
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26 | * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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27 | * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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28 | * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
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29 | * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
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30 | * OF SUCH DAMAGE.
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31 | *
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32 | * This file is part of the lwIP TCP/IP stack.
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33 | *
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34 | * Author: Adam Dunkels <adam@sics.se>
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35 | *
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36 | */
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37 | #ifndef LWIP_HDR_ICMP_H
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38 | #define LWIP_HDR_ICMP_H
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39 |
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40 | #include "lwip/opt.h"
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41 | #include "lwip/pbuf.h"
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42 | #include "lwip/ip_addr.h"
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43 | #include "lwip/netif.h"
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44 | #include "lwip/prot/icmp.h"
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45 |
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46 | #if LWIP_IPV6 && LWIP_ICMP6
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47 | #include "lwip/icmp6.h"
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48 | #endif
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49 |
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50 | #ifdef __cplusplus
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51 | extern "C" {
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52 | #endif
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53 |
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54 | /** ICMP destination unreachable codes */
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55 | enum icmp_dur_type {
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56 | /** net unreachable */
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57 | ICMP_DUR_NET = 0,
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58 | /** host unreachable */
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59 | ICMP_DUR_HOST = 1,
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60 | /** protocol unreachable */
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61 | ICMP_DUR_PROTO = 2,
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62 | /** port unreachable */
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63 | ICMP_DUR_PORT = 3,
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64 | /** fragmentation needed and DF set */
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65 | ICMP_DUR_FRAG = 4,
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66 | /** source route failed */
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67 | ICMP_DUR_SR = 5
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68 | };
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69 |
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70 | /** ICMP time exceeded codes */
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71 | enum icmp_te_type {
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72 | /** time to live exceeded in transit */
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73 | ICMP_TE_TTL = 0,
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74 | /** fragment reassembly time exceeded */
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75 | ICMP_TE_FRAG = 1
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76 | };
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77 |
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78 | #if LWIP_IPV4 && LWIP_ICMP /* don't build if not configured for use in lwipopts.h */
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79 |
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80 | void icmp_input(struct pbuf *p, struct netif *inp);
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81 | void icmp_dest_unreach(struct pbuf *p, enum icmp_dur_type t);
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82 | void icmp_time_exceeded(struct pbuf *p, enum icmp_te_type t);
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83 |
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84 | #endif /* LWIP_IPV4 && LWIP_ICMP */
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85 |
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86 | #if LWIP_IPV4 && LWIP_IPV6
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87 | #if LWIP_ICMP && LWIP_ICMP6
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88 | #define icmp_port_unreach(isipv6, pbuf) ((isipv6) ? \
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89 | icmp6_dest_unreach(pbuf, ICMP6_DUR_PORT) : \
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90 | icmp_dest_unreach(pbuf, ICMP_DUR_PORT))
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91 | #elif LWIP_ICMP
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92 | #define icmp_port_unreach(isipv6, pbuf) do{ if(!(isipv6)) { icmp_dest_unreach(pbuf, ICMP_DUR_PORT);}}while(0)
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93 | #elif LWIP_ICMP6
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94 | #define icmp_port_unreach(isipv6, pbuf) do{ if(isipv6) { icmp6_dest_unreach(pbuf, ICMP6_DUR_PORT);}}while(0)
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95 | #else
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96 | #define icmp_port_unreach(isipv6, pbuf)
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97 | #endif
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98 | #elif LWIP_IPV6 && LWIP_ICMP6
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99 | #define icmp_port_unreach(isipv6, pbuf) icmp6_dest_unreach(pbuf, ICMP6_DUR_PORT)
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100 | #elif LWIP_IPV4 && LWIP_ICMP
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101 | #define icmp_port_unreach(isipv6, pbuf) icmp_dest_unreach(pbuf, ICMP_DUR_PORT)
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102 | #else /* (LWIP_IPV6 && LWIP_ICMP6) || (LWIP_IPV4 && LWIP_ICMP) */
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103 | #define icmp_port_unreach(isipv6, pbuf)
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104 | #endif /* (LWIP_IPV6 && LWIP_ICMP6) || (LWIP_IPV4 && LWIP_ICMP) LWIP_IPV4*/
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105 |
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106 | #ifdef __cplusplus
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107 | }
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108 | #endif
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109 |
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110 | #endif /* LWIP_HDR_ICMP_H */
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