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| Rev | Author | Line No. | Line |
|---|---|---|---|
| 4973 | right-hear | 1 | #ifndef NETINET_IP_ICMP_H |
| 2 | #define NETINET_IP_ICMP_H |
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| 3 | |||
| 4 | #include |
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| 5 | #include |
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| 6 | #include |
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| 7 | |||
| 8 | __BEGIN_DECLS |
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| 9 | |||
| 10 | struct icmphdr { |
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| 11 | uint8_t type; /* message type */ |
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| 12 | uint8_t code; /* type sub-code */ |
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| 13 | uint16_t checksum; |
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| 14 | union { |
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| 15 | struct { |
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| 16 | uint16_t id; |
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| 17 | uint16_t sequence; |
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| 18 | } echo; /* echo datagram */ |
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| 19 | uint32_t gateway; /* gateway address */ |
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| 20 | struct { |
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| 21 | uint16_t __unused; |
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| 22 | uint16_t mtu; |
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| 23 | } frag; /* path mtu discovery */ |
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| 24 | } un; |
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| 25 | }; |
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| 26 | |||
| 27 | #define ICMP_ECHOREPLY 0 /* Echo Reply */ |
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| 28 | #define ICMP_DEST_UNREACH 3 /* Destination Unreachable */ |
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| 29 | #define ICMP_SOURCE_QUENCH 4 /* Source Quench */ |
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| 30 | #define ICMP_REDIRECT 5 /* Redirect (change route) */ |
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| 31 | #define ICMP_ECHO 8 /* Echo Request */ |
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| 32 | #define ICMP_TIME_EXCEEDED 11 /* Time Exceeded */ |
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| 33 | #define ICMP_PARAMETERPROB 12 /* Parameter Problem */ |
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| 34 | #define ICMP_TIMESTAMP 13 /* Timestamp Request */ |
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| 35 | #define ICMP_TIMESTAMPREPLY 14 /* Timestamp Reply */ |
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| 36 | #define ICMP_INFO_REQUEST 15 /* Information Request */ |
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| 37 | #define ICMP_INFO_REPLY 16 /* Information Reply */ |
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| 38 | #define ICMP_ADDRESS 17 /* Address Mask Request */ |
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| 39 | #define ICMP_ADDRESSREPLY 18 /* Address Mask Reply */ |
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| 40 | #define NR_ICMP_TYPES 18 |
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| 41 | |||
| 42 | |||
| 43 | /* Codes for UNREACH. */ |
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| 44 | #define ICMP_NET_UNREACH 0 /* Network Unreachable */ |
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| 45 | #define ICMP_HOST_UNREACH 1 /* Host Unreachable */ |
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| 46 | #define ICMP_PROT_UNREACH 2 /* Protocol Unreachable */ |
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| 47 | #define ICMP_PORT_UNREACH 3 /* Port Unreachable */ |
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| 48 | #define ICMP_FRAG_NEEDED 4 /* Fragmentation Needed/DF set */ |
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| 49 | #define ICMP_SR_FAILED 5 /* Source Route failed */ |
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| 50 | #define ICMP_NET_UNKNOWN 6 |
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| 51 | #define ICMP_HOST_UNKNOWN 7 |
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| 52 | #define ICMP_HOST_ISOLATED 8 |
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| 53 | #define ICMP_NET_ANO 9 |
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| 54 | #define ICMP_HOST_ANO 10 |
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| 55 | #define ICMP_NET_UNR_TOS 11 |
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| 56 | #define ICMP_HOST_UNR_TOS 12 |
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| 57 | #define ICMP_PKT_FILTERED 13 /* Packet filtered */ |
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| 58 | #define ICMP_PREC_VIOLATION 14 /* Precedence violation */ |
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| 59 | #define ICMP_PREC_CUTOFF 15 /* Precedence cut off */ |
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| 60 | #define NR_ICMP_UNREACH 15 /* instead of hardcoding immediate value */ |
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| 61 | |||
| 62 | /* Codes for REDIRECT. */ |
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| 63 | #define ICMP_REDIR_NET 0 /* Redirect Net */ |
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| 64 | #define ICMP_REDIR_HOST 1 /* Redirect Host */ |
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| 65 | #define ICMP_REDIR_NETTOS 2 /* Redirect Net for TOS */ |
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| 66 | #define ICMP_REDIR_HOSTTOS 3 /* Redirect Host for TOS */ |
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| 67 | |||
| 68 | /* Codes for TIME_EXCEEDED. */ |
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| 69 | #define ICMP_EXC_TTL 0 /* TTL count exceeded */ |
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| 70 | #define ICMP_EXC_FRAGTIME 1 /* Fragment Reass time exceeded */ |
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| 71 | |||
| 72 | /* |
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| 73 | * Lower bounds on packet lengths for various types. |
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| 74 | * For the error advice packets must first insure that the |
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| 75 | * packet is large enough to contain the returned ip header. |
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| 76 | * Only then can we do the check to see if 64 bits of packet |
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| 77 | * data have been returned, since we need to check the returned |
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| 78 | * ip header length. |
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| 79 | */ |
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| 80 | #define ICMP_MINLEN 8 /* abs minimum */ |
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| 81 | #define ICMP_TSLEN (8 + 3 * sizeof (n_time)) /* timestamp */ |
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| 82 | #define ICMP_MASKLEN 12 /* address mask */ |
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| 83 | #define ICMP_ADVLENMIN (8 + sizeof (struct ip) + 8) /* min */ |
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| 84 | #ifndef _IP_VHL |
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| 85 | #define ICMP_ADVLEN(p) (8 + ((p)->icmp_ip.ip_hl << 2) + 8) |
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| 86 | /* N.B.: must separately check that ip_hl >= 5 */ |
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| 87 | #else |
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| 88 | #define ICMP_ADVLEN(p) (8 + (IP_VHL_HL((p)->icmp_ip.ip_vhl) << 2) + 8) |
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| 89 | /* N.B.: must separately check that header length >= 5 */ |
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| 90 | #endif |
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| 91 | |||
| 92 | /* Definition of type and code fields. */ |
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| 93 | /* defined above: ICMP_ECHOREPLY, ICMP_REDIRECT, ICMP_ECHO */ |
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| 94 | #define ICMP_UNREACH 3 /* dest unreachable, codes: */ |
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| 95 | #define ICMP_SOURCEQUENCH 4 /* packet lost, slow down */ |
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| 96 | #define ICMP_ROUTERADVERT 9 /* router advertisement */ |
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| 97 | #define ICMP_ROUTERSOLICIT 10 /* router solicitation */ |
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| 98 | #define ICMP_TIMXCEED 11 /* time exceeded, code: */ |
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| 99 | #define ICMP_PARAMPROB 12 /* ip header bad */ |
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| 100 | #define ICMP_TSTAMP 13 /* timestamp request */ |
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| 101 | #define ICMP_TSTAMPREPLY 14 /* timestamp reply */ |
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| 102 | #define ICMP_IREQ 15 /* information request */ |
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| 103 | #define ICMP_IREQREPLY 16 /* information reply */ |
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| 104 | #define ICMP_MASKREQ 17 /* address mask request */ |
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| 105 | #define ICMP_MASKREPLY 18 /* address mask reply */ |
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| 106 | |||
| 107 | #define ICMP_MAXTYPE 18 |
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| 108 | |||
| 109 | /* UNREACH codes */ |
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| 110 | #define ICMP_UNREACH_NET 0 /* bad net */ |
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| 111 | #define ICMP_UNREACH_HOST 1 /* bad host */ |
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| 112 | #define ICMP_UNREACH_PROTOCOL 2 /* bad protocol */ |
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| 113 | #define ICMP_UNREACH_PORT 3 /* bad port */ |
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| 114 | #define ICMP_UNREACH_NEEDFRAG 4 /* IP_DF caused drop */ |
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| 115 | #define ICMP_UNREACH_SRCFAIL 5 /* src route failed */ |
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| 116 | #define ICMP_UNREACH_NET_UNKNOWN 6 /* unknown net */ |
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| 117 | #define ICMP_UNREACH_HOST_UNKNOWN 7 /* unknown host */ |
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| 118 | #define ICMP_UNREACH_ISOLATED 8 /* src host isolated */ |
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| 119 | #define ICMP_UNREACH_NET_PROHIB 9 /* net denied */ |
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| 120 | #define ICMP_UNREACH_HOST_PROHIB 10 /* host denied */ |
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| 121 | #define ICMP_UNREACH_TOSNET 11 /* bad tos for net */ |
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| 122 | #define ICMP_UNREACH_TOSHOST 12 /* bad tos for host */ |
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| 123 | #define ICMP_UNREACH_FILTER_PROHIB 13 /* admin prohib */ |
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| 124 | #define ICMP_UNREACH_HOST_PRECEDENCE 14 /* host prec vio. */ |
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| 125 | #define ICMP_UNREACH_PRECEDENCE_CUTOFF 15 /* prec cutoff */ |
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| 126 | |||
| 127 | /* REDIRECT codes */ |
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| 128 | #define ICMP_REDIRECT_NET 0 /* for network */ |
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| 129 | #define ICMP_REDIRECT_HOST 1 /* for host */ |
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| 130 | #define ICMP_REDIRECT_TOSNET 2 /* for tos and net */ |
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| 131 | #define ICMP_REDIRECT_TOSHOST 3 /* for tos and host */ |
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| 132 | |||
| 133 | /* TIMEXCEED codes */ |
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| 134 | #define ICMP_TIMXCEED_INTRANS 0 /* ttl==0 in transit */ |
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| 135 | #define ICMP_TIMXCEED_REASS 1 /* ttl==0 in reass */ |
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| 136 | |||
| 137 | /* PARAMPROB code */ |
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| 138 | #define ICMP_PARAMPROB_OPTABSENT 1 /* req. opt. absent */ |
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| 139 | |||
| 140 | #define ICMP_INFOTYPE(type) \ |
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| 141 | ((type) == ICMP_ECHOREPLY || (type) == ICMP_ECHO || \ |
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| 142 | (type) == ICMP_ROUTERADVERT || (type) == ICMP_ROUTERSOLICIT || \ |
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| 143 | (type) == ICMP_TSTAMP || (type) == ICMP_TSTAMPREPLY || \ |
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| 144 | (type) == ICMP_IREQ || (type) == ICMP_IREQREPLY || \ |
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| 145 | (type) == ICMP_MASKREQ || (type) == ICMP_MASKREPLY) |
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| 146 | |||
| 147 | __END_DECLS |
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| 148 | |||
| 149 | #endif |