1 #ifndef _NETINET_IP_ICMP_H 2 #define _NETINET_IP_ICMP_H 3 4 #include <stdint.h> 5 #include <netinet/in.h> 6 #include <netinet/ip.h> 7 8 #ifdef __cplusplus 9 extern "C" { 10 #endif 11 12 struct icmphdr { 13 uint8_t type; 14 uint8_t code; 15 uint16_t checksum; 16 union { 17 struct { 18 uint16_t id; 19 uint16_t sequence; 20 } echo; 21 uint32_t gateway; 22 struct { 23 uint16_t __unused; 24 uint16_t mtu; 25 } frag; 26 uint8_t reserved[4]; 27 } un; 28 }; 29 30 #define ICMP_ECHOREPLY 0 31 #define ICMP_DEST_UNREACH 3 32 #define ICMP_SOURCE_QUENCH 4 33 #define ICMP_REDIRECT 5 34 #define ICMP_ECHO 8 35 #define ICMP_TIME_EXCEEDED 11 36 #define ICMP_PARAMETERPROB 12 37 #define ICMP_TIMESTAMP 13 38 #define ICMP_TIMESTAMPREPLY 14 39 #define ICMP_INFO_REQUEST 15 40 #define ICMP_INFO_REPLY 16 41 #define ICMP_ADDRESS 17 42 #define ICMP_ADDRESSREPLY 18 43 #define NR_ICMP_TYPES 18 44 45 46 #define ICMP_NET_UNREACH 0 47 #define ICMP_HOST_UNREACH 1 48 #define ICMP_PROT_UNREACH 2 49 #define ICMP_PORT_UNREACH 3 50 #define ICMP_FRAG_NEEDED 4 51 #define ICMP_SR_FAILED 5 52 #define ICMP_NET_UNKNOWN 6 53 #define ICMP_HOST_UNKNOWN 7 54 #define ICMP_HOST_ISOLATED 8 55 #define ICMP_NET_ANO 9 56 #define ICMP_HOST_ANO 10 57 #define ICMP_NET_UNR_TOS 11 58 #define ICMP_HOST_UNR_TOS 12 59 #define ICMP_PKT_FILTERED 13 60 #define ICMP_PREC_VIOLATION 14 61 #define ICMP_PREC_CUTOFF 15 62 #define NR_ICMP_UNREACH 15 63 64 #define ICMP_REDIR_NET 0 65 #define ICMP_REDIR_HOST 1 66 #define ICMP_REDIR_NETTOS 2 67 #define ICMP_REDIR_HOSTTOS 3 68 69 #define ICMP_EXC_TTL 0 70 #define ICMP_EXC_FRAGTIME 1 71 72 73 struct icmp_ra_addr { 74 uint32_t ira_addr; 75 uint32_t ira_preference; 76 }; 77 78 struct icmp { 79 uint8_t icmp_type; 80 uint8_t icmp_code; 81 uint16_t icmp_cksum; 82 union { 83 uint8_t ih_pptr; 84 struct in_addr ih_gwaddr; 85 struct ih_idseq { 86 uint16_t icd_id; 87 uint16_t icd_seq; 88 } ih_idseq; 89 uint32_t ih_void; 90 91 struct ih_pmtu { 92 uint16_t ipm_void; 93 uint16_t ipm_nextmtu; 94 } ih_pmtu; 95 96 struct ih_rtradv { 97 uint8_t irt_num_addrs; 98 uint8_t irt_wpa; 99 uint16_t irt_lifetime; 100 } ih_rtradv; 101 } icmp_hun; 102 union { 103 struct { 104 uint32_t its_otime; 105 uint32_t its_rtime; 106 uint32_t its_ttime; 107 } id_ts; 108 struct { 109 struct ip idi_ip; 110 } id_ip; 111 struct icmp_ra_addr id_radv; 112 uint32_t id_mask; 113 uint8_t id_data[1]; 114 } icmp_dun; 115 }; 116 117 #define icmp_pptr icmp_hun.ih_pptr 118 #define icmp_gwaddr icmp_hun.ih_gwaddr 119 #define icmp_id icmp_hun.ih_idseq.icd_id 120 #define icmp_seq icmp_hun.ih_idseq.icd_seq 121 #define icmp_void icmp_hun.ih_void 122 #define icmp_pmvoid icmp_hun.ih_pmtu.ipm_void 123 #define icmp_nextmtu icmp_hun.ih_pmtu.ipm_nextmtu 124 #define icmp_num_addrs icmp_hun.ih_rtradv.irt_num_addrs 125 #define icmp_wpa icmp_hun.ih_rtradv.irt_wpa 126 #define icmp_lifetime icmp_hun.ih_rtradv.irt_lifetime 127 #define icmp_otime icmp_dun.id_ts.its_otime 128 #define icmp_rtime icmp_dun.id_ts.its_rtime 129 #define icmp_ttime icmp_dun.id_ts.its_ttime 130 #define icmp_ip icmp_dun.id_ip.idi_ip 131 #define icmp_radv icmp_dun.id_radv 132 #define icmp_mask icmp_dun.id_mask 133 #define icmp_data icmp_dun.id_data 134 135 #define ICMP_MINLEN 8 136 #define ICMP_TSLEN (8 + 3 * sizeof (n_time)) 137 #define ICMP_MASKLEN 12 138 #define ICMP_ADVLENMIN (8 + sizeof (struct ip) + 8) 139 #define ICMP_ADVLEN(p) (8 + ((p)->icmp_ip.ip_hl << 2) + 8) 140 141 #define ICMP_UNREACH 3 142 #define ICMP_SOURCEQUENCH 4 143 #define ICMP_ROUTERADVERT 9 144 #define ICMP_ROUTERSOLICIT 10 145 #define ICMP_TIMXCEED 11 146 #define ICMP_PARAMPROB 12 147 #define ICMP_TSTAMP 13 148 #define ICMP_TSTAMPREPLY 14 149 #define ICMP_IREQ 15 150 #define ICMP_IREQREPLY 16 151 #define ICMP_MASKREQ 17 152 #define ICMP_MASKREPLY 18 153 #define ICMP_MAXTYPE 18 154 155 #define ICMP_UNREACH_NET 0 156 #define ICMP_UNREACH_HOST 1 157 #define ICMP_UNREACH_PROTOCOL 2 158 #define ICMP_UNREACH_PORT 3 159 #define ICMP_UNREACH_NEEDFRAG 4 160 #define ICMP_UNREACH_SRCFAIL 5 161 #define ICMP_UNREACH_NET_UNKNOWN 6 162 #define ICMP_UNREACH_HOST_UNKNOWN 7 163 #define ICMP_UNREACH_ISOLATED 8 164 #define ICMP_UNREACH_NET_PROHIB 9 165 #define ICMP_UNREACH_HOST_PROHIB 10 166 #define ICMP_UNREACH_TOSNET 11 167 #define ICMP_UNREACH_TOSHOST 12 168 #define ICMP_UNREACH_FILTER_PROHIB 13 169 #define ICMP_UNREACH_HOST_PRECEDENCE 14 170 #define ICMP_UNREACH_PRECEDENCE_CUTOFF 15 171 172 #define ICMP_REDIRECT_NET 0 173 #define ICMP_REDIRECT_HOST 1 174 #define ICMP_REDIRECT_TOSNET 2 175 #define ICMP_REDIRECT_TOSHOST 3 176 177 #define ICMP_TIMXCEED_INTRANS 0 178 #define ICMP_TIMXCEED_REASS 1 179 180 #define ICMP_PARAMPROB_OPTABSENT 1 181 182 #define ICMP_INFOTYPE(type) \ 183 ((type) == ICMP_ECHOREPLY || (type) == ICMP_ECHO || \ 184 (type) == ICMP_ROUTERADVERT || (type) == ICMP_ROUTERSOLICIT || \ 185 (type) == ICMP_TSTAMP || (type) == ICMP_TSTAMPREPLY || \ 186 (type) == ICMP_IREQ || (type) == ICMP_IREQREPLY || \ 187 (type) == ICMP_MASKREQ || (type) == ICMP_MASKREPLY) 188 189 #ifdef __cplusplus 190 } 191 #endif 192 193 #endif 194