/* Copyright (C) 1991, 92, 93, 94, 95, 96, 97 Free Software Foundation, Inc. This file is part of the GNU C Library. The GNU C Library is free software; you can redistribute it and/or modify it under the terms of the GNU Library General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version. The GNU C Library is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Library General Public License for more details. You should have received a copy of the GNU Library General Public License along with the GNU C Library; see the file COPYING.LIB. If not, write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ #ifndef _NETINET_ICMP6_H #define _NETINET_ICMP6_H 1 #include <inttypes.h> #include <string.h> #include <sys/types.h> #include <netinet/in.h> #define ICMP6_FILTER 1 #define ICMP6_FILTER_BLOCK 1 #define ICMP6_FILTER_PASS 2 #define ICMP6_FILTER_BLOCKOTHERS 3 #define ICMP6_FILTER_PASSONLY 4 struct icmp6_filter { uint32_t data[8]; }; struct icmp6_hdr { uint8_t icmp6_type; /* type field */ uint8_t icmp6_code; /* code field */ uint16_t icmp6_cksum; /* checksum field */ union { uint32_t icmp6_un_data32[1]; /* type-specific field */ uint16_t icmp6_un_data16[2]; /* type-specific field */ uint8_t icmp6_un_data8[4]; /* type-specific field */ } icmp6_dataun; }; #define icmp6_data32 icmp6_dataun.icmp6_un_data32 #define icmp6_data16 icmp6_dataun.icmp6_un_data16 #define icmp6_data8 icmp6_dataun.icmp6_un_data8 #define icmp6_pptr icmp6_data32[0] /* parameter prob */ #define icmp6_mtu icmp6_data32[0] /* packet too big */ #define icmp6_id icmp6_data16[0] /* echo request/reply */ #define icmp6_seq icmp6_data16[1] /* echo request/reply */ #define icmp6_maxdelay icmp6_data16[0] /* mcast group membership */ #define ICMP6_DST_UNREACH 1 #define ICMP6_PACKET_TOO_BIG 2 #define ICMP6_TIME_EXCEEDED 3 #define ICMP6_PARAM_PROB 4 #define ICMP6_INFOMSG_MASK 0x80 /* all informational messages */ #define ICMP6_ECHO_REQUEST 128 #define ICMP6_ECHO_REPLY 129 #define ICMP6_MEMBERSHIP_QUERY 130 #define ICMP6_MEMBERSHIP_REPORT 131 #define ICMP6_MEMBERSHIP_REDUCTION 132 #define ICMP6_DST_UNREACH_NOROUTE 0 /* no route to destination */ #define ICMP6_DST_UNREACH_ADMIN 1 /* communication with destination */ /* administratively prohibited */ #define ICMP6_DST_UNREACH_NOTNEIGHBOR 2 /* not a neighbor */ #define ICMP6_DST_UNREACH_ADDR 3 /* address unreachable */ #define ICMP6_DST_UNREACH_NOPORT 4 /* bad port */ #define ICMP6_TIME_EXCEED_TRANSIT 0 /* Hop Limit == 0 in transit */ #define ICMP6_TIME_EXCEED_REASSEMBLY 1 /* Reassembly time out */ #define ICMP6_PARAMPROB_HEADER 0 /* erroneous header field */ #define ICMP6_PARAMPROB_NEXTHEADER 1 /* unrecognized Next Header */ #define ICMP6_PARAMPROB_OPTION 2 /* unrecognized IPv6 option */ #define ICMP6_FILTER_WILLPASS(type, filterp) \ ((((filterp)->data[(type) >> 5]) & (1 << ((type) & 31))) == 0) #define ICMP6_FILTER_WILLBLOCK(type, filterp) \ ((((filterp)->data[(type) >> 5]) & (1 << ((type) & 31))) != 0) #define ICMP6_FILTER_SETPASS(type, filterp) \ ((((filterp)->data[(type) >> 5]) &= ~(1 << ((type) & 31)))) #define ICMP6_FILTER_SETBLOCK(type, filterp) \ ((((filterp)->data[(type) >> 5]) |= (1 << ((type) & 31)))) #define ICMP6_FILTER_SETPASSALL(filterp) \ memset (filterp, 0, sizeof (struct icmp6_filter)); #define ICMP6_FILTER_SETBLOCKALL(filterp) \ memset (filterp, 0xFF, sizeof (struct icmp6_filter)); #define ND_ROUTER_SOLICIT 133 #define ND_ROUTER_ADVERT 134 #define ND_NEIGHBOR_SOLICIT 135 #define ND_NEIGHBOR_ADVERT 136 #define ND_REDIRECT 137 struct nd_router_solicit /* router solicitation */ { struct icmp6_hdr nd_rs_hdr; /* could be followed by options */ }; #define nd_rs_type nd_rs_hdr.icmp6_type #define nd_rs_code nd_rs_hdr.icmp6_code #define nd_rs_cksum nd_rs_hdr.icmp6_cksum #define nd_rs_reserved nd_rs_hdr.icmp6_data32[0] struct nd_router_advert /* router advertisement */ { struct icmp6_hdr nd_ra_hdr; uint32_t nd_ra_reachable; /* reachable time */ uint32_t nd_ra_retransmit; /* retransmit timer */ /* could be followed by options */ }; #define nd_ra_type nd_ra_hdr.icmp6_type #define nd_ra_code nd_ra_hdr.icmp6_code #define nd_ra_cksum nd_ra_hdr.icmp6_cksum #define nd_ra_curhoplimit nd_ra_hdr.icmp6_data8[0] #define nd_ra_flags_reserved nd_ra_hdr.icmp6_data8[1] #define ND_RA_FLAG_MANAGED 0x80 #define ND_RA_FLAG_OTHER 0x40 #define nd_ra_router_lifetime nd_ra_hdr.icmp6_data16[1] struct nd_neighbor_solicit /* neighbor solicitation */ { struct icmp6_hdr nd_ns_hdr; struct in6_addr nd_ns_target; /* target address */ /* could be followed by options */ }; #define nd_ns_type nd_ns_hdr.icmp6_type #define nd_ns_code nd_ns_hdr.icmp6_code #define nd_ns_cksum nd_ns_hdr.icmp6_cksum #define nd_ns_reserved nd_ns_hdr.icmp6_data32[0] struct nd_neighbor_advert /* neighbor advertisement */ { struct icmp6_hdr nd_na_hdr; struct in6_addr nd_na_target; /* target address */ /* could be followed by options */ }; #define nd_na_type nd_na_hdr.icmp6_type #define nd_na_code nd_na_hdr.icmp6_code #define nd_na_cksum nd_na_hdr.icmp6_cksum #define nd_na_flags_reserved nd_na_hdr.icmp6_data32[0] #if BYTE_ORDER == BIG_ENDIAN #define ND_NA_FLAG_ROUTER 0x80000000 #define ND_NA_FLAG_SOLICITED 0x40000000 #define ND_NA_FLAG_OVERRIDE 0x20000000 #else /* BYTE_ORDER == LITTLE_ENDIAN */ #define ND_NA_FLAG_ROUTER 0x00000080 #define ND_NA_FLAG_SOLICITED 0x00000040 #define ND_NA_FLAG_OVERRIDE 0x00000020 #endif struct nd_redirect /* redirect */ { struct icmp6_hdr nd_rd_hdr; struct in6_addr nd_rd_target; /* target address */ struct in6_addr nd_rd_dst; /* destination address */ /* could be followed by options */ }; #define nd_rd_type nd_rd_hdr.icmp6_type #define nd_rd_code nd_rd_hdr.icmp6_code #define nd_rd_cksum nd_rd_hdr.icmp6_cksum #define nd_rd_reserved nd_rd_hdr.icmp6_data32[0] struct nd_opt_hdr /* Neighbor discovery option header */ { uint8_t nd_opt_type; uint8_t nd_opt_len; /* in units of 8 octets */ /* followed by option specific data */ }; #define ND_OPT_SOURCE_LINKADDR 1 #define ND_OPT_TARGET_LINKADDR 2 #define ND_OPT_PREFIX_INFORMATION 3 #define ND_OPT_REDIRECTED_HEADER 4 #define ND_OPT_MTU 5 struct nd_opt_prefix_info /* prefix information */ { uint8_t nd_opt_pi_type; uint8_t nd_opt_pi_len; uint8_t nd_opt_pi_prefix_len; uint8_t nd_opt_pi_flags_reserved; uint32_t nd_opt_pi_valid_time; uint32_t nd_opt_pi_preferred_time; uint32_t nd_opt_pi_reserved2; struct in6_addr nd_opt_pi_prefix; }; #define ND_OPT_PI_FLAG_ONLINK 0x80 #define ND_OPT_PI_FLAG_AUTO 0x40 struct nd_opt_rd_hdr /* redirected header */ { uint8_t nd_opt_rh_type; uint8_t nd_opt_rh_len; uint16_t nd_opt_rh_reserved1; uint32_t nd_opt_rh_reserved2; /* followed by IP header and data */ }; struct nd_opt_mtu /* MTU option */ { uint8_t nd_opt_mtu_type; uint8_t nd_opt_mtu_len; uint16_t nd_opt_mtu_reserved; uint32_t nd_opt_mtu_mtu; }; #endif /* netinet/icmpv6.h */