| 1 | /* Copyright (C) 1991,92,93,94,95,96,97,2000 Free Software Foundation, Inc. |
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| 2 | This file is part of the GNU C Library. |
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| 3 | |
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| 4 | The GNU C Library is free software; you can redistribute it and/or |
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| 5 | modify it under the terms of the GNU Lesser General Public |
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| 6 | License as published by the Free Software Foundation; either |
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| 7 | version 2.1 of the License, or (at your option) any later version. |
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| 8 | |
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| 9 | The GNU C Library is distributed in the hope that it will be useful, |
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| 10 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
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| 11 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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| 12 | Lesser General Public License for more details. |
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| 13 | |
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| 14 | You should have received a copy of the GNU Lesser General Public |
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| 15 | License along with the GNU C Library; if not, write to the Free |
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| 16 | Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA |
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| 17 | 02111-1307 USA. */ |
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| 18 | |
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| 19 | #ifndef _NETINET_ICMP6_H |
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| 20 | #define _NETINET_ICMP6_H 1 |
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| 21 | |
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| 22 | #include <inttypes.h> |
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| 23 | #include <string.h> |
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| 24 | #include <sys/types.h> |
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| 25 | #include <netinet/in.h> |
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| 26 | |
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| 27 | #define ICMP6_FILTER 1 |
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| 28 | |
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| 29 | #define ICMP6_FILTER_BLOCK 1 |
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| 30 | #define ICMP6_FILTER_PASS 2 |
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| 31 | #define ICMP6_FILTER_BLOCKOTHERS 3 |
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| 32 | #define ICMP6_FILTER_PASSONLY 4 |
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| 33 | |
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| 34 | struct icmp6_filter |
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| 35 | { |
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| 36 | uint32_t data[8]; |
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| 37 | }; |
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| 38 | |
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| 39 | struct icmp6_hdr |
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| 40 | { |
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| 41 | uint8_t icmp6_type; /* type field */ |
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| 42 | uint8_t icmp6_code; /* code field */ |
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| 43 | uint16_t icmp6_cksum; /* checksum field */ |
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| 44 | union |
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| 45 | { |
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| 46 | uint32_t icmp6_un_data32[1]; /* type-specific field */ |
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| 47 | uint16_t icmp6_un_data16[2]; /* type-specific field */ |
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| 48 | uint8_t icmp6_un_data8[4]; /* type-specific field */ |
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| 49 | } icmp6_dataun; |
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| 50 | }; |
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| 51 | |
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| 52 | #define icmp6_data32 icmp6_dataun.icmp6_un_data32 |
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| 53 | #define icmp6_data16 icmp6_dataun.icmp6_un_data16 |
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| 54 | #define icmp6_data8 icmp6_dataun.icmp6_un_data8 |
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| 55 | #define icmp6_pptr icmp6_data32[0] /* parameter prob */ |
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| 56 | #define icmp6_mtu icmp6_data32[0] /* packet too big */ |
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| 57 | #define icmp6_id icmp6_data16[0] /* echo request/reply */ |
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| 58 | #define icmp6_seq icmp6_data16[1] /* echo request/reply */ |
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| 59 | #define icmp6_maxdelay icmp6_data16[0] /* mcast group membership */ |
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| 60 | |
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| 61 | #define ICMP6_DST_UNREACH 1 |
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| 62 | #define ICMP6_PACKET_TOO_BIG 2 |
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| 63 | #define ICMP6_TIME_EXCEEDED 3 |
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| 64 | #define ICMP6_PARAM_PROB 4 |
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| 65 | |
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| 66 | #define ICMP6_INFOMSG_MASK 0x80 /* all informational messages */ |
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| 67 | |
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| 68 | #define ICMP6_ECHO_REQUEST 128 |
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| 69 | #define ICMP6_ECHO_REPLY 129 |
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| 70 | #define ICMP6_MEMBERSHIP_QUERY 130 |
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| 71 | #define ICMP6_MEMBERSHIP_REPORT 131 |
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| 72 | #define ICMP6_MEMBERSHIP_REDUCTION 132 |
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| 73 | |
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| 74 | #define ICMP6_DST_UNREACH_NOROUTE 0 /* no route to destination */ |
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| 75 | #define ICMP6_DST_UNREACH_ADMIN 1 /* communication with destination */ |
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| 76 | /* administratively prohibited */ |
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| 77 | #define ICMP6_DST_UNREACH_NOTNEIGHBOR 2 /* not a neighbor */ |
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| 78 | #define ICMP6_DST_UNREACH_ADDR 3 /* address unreachable */ |
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| 79 | #define ICMP6_DST_UNREACH_NOPORT 4 /* bad port */ |
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| 80 | |
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| 81 | #define ICMP6_TIME_EXCEED_TRANSIT 0 /* Hop Limit == 0 in transit */ |
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| 82 | #define ICMP6_TIME_EXCEED_REASSEMBLY 1 /* Reassembly time out */ |
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| 83 | |
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| 84 | #define ICMP6_PARAMPROB_HEADER 0 /* erroneous header field */ |
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| 85 | #define ICMP6_PARAMPROB_NEXTHEADER 1 /* unrecognized Next Header */ |
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| 86 | #define ICMP6_PARAMPROB_OPTION 2 /* unrecognized IPv6 option */ |
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| 87 | |
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| 88 | #define ICMP6_FILTER_WILLPASS(type, filterp) \ |
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| 89 | ((((filterp)->data[(type) >> 5]) & (1 << ((type) & 31))) == 0) |
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| 90 | |
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| 91 | #define ICMP6_FILTER_WILLBLOCK(type, filterp) \ |
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| 92 | ((((filterp)->data[(type) >> 5]) & (1 << ((type) & 31))) != 0) |
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| 93 | |
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| 94 | #define ICMP6_FILTER_SETPASS(type, filterp) \ |
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| 95 | ((((filterp)->data[(type) >> 5]) &= ~(1 << ((type) & 31)))) |
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| 96 | |
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| 97 | #define ICMP6_FILTER_SETBLOCK(type, filterp) \ |
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| 98 | ((((filterp)->data[(type) >> 5]) |= (1 << ((type) & 31)))) |
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| 99 | |
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| 100 | #define ICMP6_FILTER_SETPASSALL(filterp) \ |
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| 101 | memset (filterp, 0, sizeof (struct icmp6_filter)); |
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| 102 | |
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| 103 | #define ICMP6_FILTER_SETBLOCKALL(filterp) \ |
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| 104 | memset (filterp, 0xFF, sizeof (struct icmp6_filter)); |
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| 105 | |
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| 106 | #define ND_ROUTER_SOLICIT 133 |
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| 107 | #define ND_ROUTER_ADVERT 134 |
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| 108 | #define ND_NEIGHBOR_SOLICIT 135 |
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| 109 | #define ND_NEIGHBOR_ADVERT 136 |
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| 110 | #define ND_REDIRECT 137 |
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| 111 | |
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| 112 | struct nd_router_solicit /* router solicitation */ |
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| 113 | { |
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| 114 | struct icmp6_hdr nd_rs_hdr; |
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| 115 | /* could be followed by options */ |
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| 116 | }; |
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| 117 | |
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| 118 | #define nd_rs_type nd_rs_hdr.icmp6_type |
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| 119 | #define nd_rs_code nd_rs_hdr.icmp6_code |
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| 120 | #define nd_rs_cksum nd_rs_hdr.icmp6_cksum |
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| 121 | #define nd_rs_reserved nd_rs_hdr.icmp6_data32[0] |
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| 122 | |
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| 123 | struct nd_router_advert /* router advertisement */ |
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| 124 | { |
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| 125 | struct icmp6_hdr nd_ra_hdr; |
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| 126 | uint32_t nd_ra_reachable; /* reachable time */ |
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| 127 | uint32_t nd_ra_retransmit; /* retransmit timer */ |
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| 128 | /* could be followed by options */ |
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| 129 | }; |
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| 130 | |
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| 131 | #define nd_ra_type nd_ra_hdr.icmp6_type |
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| 132 | #define nd_ra_code nd_ra_hdr.icmp6_code |
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| 133 | #define nd_ra_cksum nd_ra_hdr.icmp6_cksum |
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| 134 | #define nd_ra_curhoplimit nd_ra_hdr.icmp6_data8[0] |
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| 135 | #define nd_ra_flags_reserved nd_ra_hdr.icmp6_data8[1] |
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| 136 | #define ND_RA_FLAG_MANAGED 0x80 |
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| 137 | #define ND_RA_FLAG_OTHER 0x40 |
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| 138 | #define ND_RA_FLAG_HOME_AGENT 0x20 |
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| 139 | #define nd_ra_router_lifetime nd_ra_hdr.icmp6_data16[1] |
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| 140 | |
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| 141 | struct nd_neighbor_solicit /* neighbor solicitation */ |
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| 142 | { |
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| 143 | struct icmp6_hdr nd_ns_hdr; |
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| 144 | struct in6_addr nd_ns_target; /* target address */ |
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| 145 | /* could be followed by options */ |
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| 146 | }; |
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| 147 | |
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| 148 | #define nd_ns_type nd_ns_hdr.icmp6_type |
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| 149 | #define nd_ns_code nd_ns_hdr.icmp6_code |
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| 150 | #define nd_ns_cksum nd_ns_hdr.icmp6_cksum |
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| 151 | #define nd_ns_reserved nd_ns_hdr.icmp6_data32[0] |
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| 152 | |
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| 153 | struct nd_neighbor_advert /* neighbor advertisement */ |
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| 154 | { |
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| 155 | struct icmp6_hdr nd_na_hdr; |
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| 156 | struct in6_addr nd_na_target; /* target address */ |
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| 157 | /* could be followed by options */ |
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| 158 | }; |
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| 159 | |
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| 160 | #define nd_na_type nd_na_hdr.icmp6_type |
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| 161 | #define nd_na_code nd_na_hdr.icmp6_code |
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| 162 | #define nd_na_cksum nd_na_hdr.icmp6_cksum |
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| 163 | #define nd_na_flags_reserved nd_na_hdr.icmp6_data32[0] |
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| 164 | #if BYTE_ORDER == BIG_ENDIAN |
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| 165 | #define ND_NA_FLAG_ROUTER 0x80000000 |
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| 166 | #define ND_NA_FLAG_SOLICITED 0x40000000 |
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| 167 | #define ND_NA_FLAG_OVERRIDE 0x20000000 |
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| 168 | #else /* BYTE_ORDER == LITTLE_ENDIAN */ |
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| 169 | #define ND_NA_FLAG_ROUTER 0x00000080 |
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| 170 | #define ND_NA_FLAG_SOLICITED 0x00000040 |
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| 171 | #define ND_NA_FLAG_OVERRIDE 0x00000020 |
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| 172 | #endif |
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| 173 | |
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| 174 | struct nd_redirect /* redirect */ |
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| 175 | { |
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| 176 | struct icmp6_hdr nd_rd_hdr; |
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| 177 | struct in6_addr nd_rd_target; /* target address */ |
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| 178 | struct in6_addr nd_rd_dst; /* destination address */ |
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| 179 | /* could be followed by options */ |
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| 180 | }; |
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| 181 | |
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| 182 | #define nd_rd_type nd_rd_hdr.icmp6_type |
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| 183 | #define nd_rd_code nd_rd_hdr.icmp6_code |
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| 184 | #define nd_rd_cksum nd_rd_hdr.icmp6_cksum |
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| 185 | #define nd_rd_reserved nd_rd_hdr.icmp6_data32[0] |
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| 186 | |
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| 187 | struct nd_opt_hdr /* Neighbor discovery option header */ |
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| 188 | { |
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| 189 | uint8_t nd_opt_type; |
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| 190 | uint8_t nd_opt_len; /* in units of 8 octets */ |
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| 191 | /* followed by option specific data */ |
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| 192 | }; |
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| 193 | |
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| 194 | #define ND_OPT_SOURCE_LINKADDR 1 |
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| 195 | #define ND_OPT_TARGET_LINKADDR 2 |
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| 196 | #define ND_OPT_PREFIX_INFORMATION 3 |
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| 197 | #define ND_OPT_REDIRECTED_HEADER 4 |
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| 198 | #define ND_OPT_MTU 5 |
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| 199 | #define ND_OPT_RTR_ADV_INTERVAL 7 |
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| 200 | #define ND_OPT_HOME_AGENT_INFO 8 |
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| 201 | |
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| 202 | struct nd_opt_prefix_info /* prefix information */ |
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| 203 | { |
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| 204 | uint8_t nd_opt_pi_type; |
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| 205 | uint8_t nd_opt_pi_len; |
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| 206 | uint8_t nd_opt_pi_prefix_len; |
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| 207 | uint8_t nd_opt_pi_flags_reserved; |
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| 208 | uint32_t nd_opt_pi_valid_time; |
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| 209 | uint32_t nd_opt_pi_preferred_time; |
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| 210 | uint32_t nd_opt_pi_reserved2; |
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| 211 | struct in6_addr nd_opt_pi_prefix; |
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| 212 | }; |
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| 213 | |
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| 214 | #define ND_OPT_PI_FLAG_ONLINK 0x80 |
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| 215 | #define ND_OPT_PI_FLAG_AUTO 0x40 |
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| 216 | #define ND_OPT_PI_FLAG_RADDR 0x20 |
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| 217 | |
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| 218 | struct nd_opt_rd_hdr /* redirected header */ |
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| 219 | { |
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| 220 | uint8_t nd_opt_rh_type; |
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| 221 | uint8_t nd_opt_rh_len; |
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| 222 | uint16_t nd_opt_rh_reserved1; |
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| 223 | uint32_t nd_opt_rh_reserved2; |
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| 224 | /* followed by IP header and data */ |
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| 225 | }; |
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| 226 | |
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| 227 | struct nd_opt_mtu /* MTU option */ |
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| 228 | { |
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| 229 | uint8_t nd_opt_mtu_type; |
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| 230 | uint8_t nd_opt_mtu_len; |
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| 231 | uint16_t nd_opt_mtu_reserved; |
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| 232 | uint32_t nd_opt_mtu_mtu; |
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| 233 | }; |
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| 234 | |
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| 235 | /* Mobile IPv6 extension: Advertisement Interval. */ |
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| 236 | struct nd_opt_adv_interval |
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| 237 | { |
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| 238 | uint8_t nd_opt_adv_interval_type; |
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| 239 | uint8_t nd_opt_adv_interval_len; |
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| 240 | uint16_t nd_opt_adv_interval_reserved; |
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| 241 | uint32_t nd_opt_adv_interval_ival; |
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| 242 | }; |
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| 243 | |
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| 244 | /* Mobile IPv6 extension: Home Agent Info. */ |
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| 245 | struct nd_opt_home_agent_info |
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| 246 | { |
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| 247 | uint8_t nd_opt_home_agent_info_type; |
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| 248 | uint8_t nd_opt_home_agent_info_len; |
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| 249 | uint16_t nd_opt_home_agent_info_reserved; |
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| 250 | int16_t nd_opt_home_agent_info_preference; |
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| 251 | uint16_t nd_opt_home_agent_info_lifetime; |
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| 252 | }; |
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| 253 | |
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| 254 | #endif /* netinet/icmpv6.h */ |
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