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/* 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 */
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