/* Copyright (C) 1991-2018 Free Software Foundation, Inc.

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This file is part of the GNU C Library.

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The GNU C Library is free software; you can redistribute it and/or

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modify it under the terms of the GNU Lesser General Public

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License as published by the Free Software Foundation; either

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version 2.1 of the License, or (at your option) any later version.

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The GNU C Library is distributed in the hope that it will be useful,

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but WITHOUT ANY WARRANTY; without even the implied warranty of

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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU

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Lesser General Public License for more details.

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You should have received a copy of the GNU Lesser General Public

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License along with the GNU C Library; if not, see

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<http://www.gnu.org/licenses/>. */

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#ifndef _NETINET_ICMP6_H

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#define _NETINET_ICMP6_H 1

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#include <inttypes.h>

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#include <string.h>

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#include <sys/types.h>

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#include <netinet/in.h>

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#define ICMP6_FILTER 1

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#define ICMP6_FILTER_BLOCK 1

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#define ICMP6_FILTER_PASS 2

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#define ICMP6_FILTER_BLOCKOTHERS 3

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#define ICMP6_FILTER_PASSONLY 4

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struct icmp6_filter

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{

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uint32_t icmp6_filt[8];

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};

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struct icmp6_hdr

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{

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uint8_t icmp6_type; /* type field */

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uint8_t icmp6_code; /* code field */

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uint16_t icmp6_cksum; /* checksum field */

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union

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{

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uint32_t icmp6_un_data32[1]; /* type-specific field */

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uint16_t icmp6_un_data16[2]; /* type-specific field */

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uint8_t icmp6_un_data8[4]; /* type-specific field */

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} icmp6_dataun;

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};

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#define icmp6_data32 icmp6_dataun.icmp6_un_data32

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#define icmp6_data16 icmp6_dataun.icmp6_un_data16

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#define icmp6_data8 icmp6_dataun.icmp6_un_data8

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#define icmp6_pptr icmp6_data32[0] /* parameter prob */

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#define icmp6_mtu icmp6_data32[0] /* packet too big */

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#define icmp6_id icmp6_data16[0] /* echo request/reply */

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#define icmp6_seq icmp6_data16[1] /* echo request/reply */

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#define icmp6_maxdelay icmp6_data16[0] /* mcast group membership */

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#define ICMP6_DST_UNREACH 1

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#define ICMP6_PACKET_TOO_BIG 2

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#define ICMP6_TIME_EXCEEDED 3

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#define ICMP6_PARAM_PROB 4

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#define ICMP6_INFOMSG_MASK 0x80 /* all informational messages */

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#define ICMP6_ECHO_REQUEST 128

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#define ICMP6_ECHO_REPLY 129

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#define MLD_LISTENER_QUERY 130

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#define MLD_LISTENER_REPORT 131

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#define MLD_LISTENER_REDUCTION 132

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#define ICMP6_DST_UNREACH_NOROUTE 0 /* no route to destination */

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#define ICMP6_DST_UNREACH_ADMIN 1 /* communication with destination */

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/* administratively prohibited */

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#define ICMP6_DST_UNREACH_BEYONDSCOPE 2 /* beyond scope of source address */

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#define ICMP6_DST_UNREACH_ADDR 3 /* address unreachable */

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#define ICMP6_DST_UNREACH_NOPORT 4 /* bad port */

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#define ICMP6_TIME_EXCEED_TRANSIT 0 /* Hop Limit == 0 in transit */

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#define ICMP6_TIME_EXCEED_REASSEMBLY 1 /* Reassembly time out */

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#define ICMP6_PARAMPROB_HEADER 0 /* erroneous header field */

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#define ICMP6_PARAMPROB_NEXTHEADER 1 /* unrecognized Next Header */

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#define ICMP6_PARAMPROB_OPTION 2 /* unrecognized IPv6 option */

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#define ICMP6_FILTER_WILLPASS(type, filterp) \

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((((filterp)->icmp6_filt[(type) >> 5]) & (1 << ((type) & 31))) == 0)

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#define ICMP6_FILTER_WILLBLOCK(type, filterp) \

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((((filterp)->icmp6_filt[(type) >> 5]) & (1 << ((type) & 31))) != 0)

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#define ICMP6_FILTER_SETPASS(type, filterp) \

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((((filterp)->icmp6_filt[(type) >> 5]) &= ~(1 << ((type) & 31))))

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#define ICMP6_FILTER_SETBLOCK(type, filterp) \

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((((filterp)->icmp6_filt[(type) >> 5]) |= (1 << ((type) & 31))))

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#define ICMP6_FILTER_SETPASSALL(filterp) \

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memset (filterp, 0, sizeof (struct icmp6_filter));

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#define ICMP6_FILTER_SETBLOCKALL(filterp) \

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memset (filterp, 0xFF, sizeof (struct icmp6_filter));

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#define ND_ROUTER_SOLICIT 133

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#define ND_ROUTER_ADVERT 134

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#define ND_NEIGHBOR_SOLICIT 135

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#define ND_NEIGHBOR_ADVERT 136

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#define ND_REDIRECT 137

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struct nd_router_solicit /* router solicitation */

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{

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struct icmp6_hdr nd_rs_hdr;

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/* could be followed by options */

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};

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#define nd_rs_type nd_rs_hdr.icmp6_type

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#define nd_rs_code nd_rs_hdr.icmp6_code

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#define nd_rs_cksum nd_rs_hdr.icmp6_cksum

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#define nd_rs_reserved nd_rs_hdr.icmp6_data32[0]

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struct nd_router_advert /* router advertisement */

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{

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struct icmp6_hdr nd_ra_hdr;

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uint32_t nd_ra_reachable; /* reachable time */

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uint32_t nd_ra_retransmit; /* retransmit timer */

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/* could be followed by options */

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};

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#define nd_ra_type nd_ra_hdr.icmp6_type

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#define nd_ra_code nd_ra_hdr.icmp6_code

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#define nd_ra_cksum nd_ra_hdr.icmp6_cksum

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#define nd_ra_curhoplimit nd_ra_hdr.icmp6_data8[0]

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#define nd_ra_flags_reserved nd_ra_hdr.icmp6_data8[1]

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#define ND_RA_FLAG_MANAGED 0x80

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#define ND_RA_FLAG_OTHER 0x40

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#define ND_RA_FLAG_HOME_AGENT 0x20

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#define nd_ra_router_lifetime nd_ra_hdr.icmp6_data16[1]

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struct nd_neighbor_solicit /* neighbor solicitation */

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{

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struct icmp6_hdr nd_ns_hdr;

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struct in6_addr nd_ns_target; /* target address */

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/* could be followed by options */

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};

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#define nd_ns_type nd_ns_hdr.icmp6_type

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#define nd_ns_code nd_ns_hdr.icmp6_code

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#define nd_ns_cksum nd_ns_hdr.icmp6_cksum

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#define nd_ns_reserved nd_ns_hdr.icmp6_data32[0]

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struct nd_neighbor_advert /* neighbor advertisement */

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{

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struct icmp6_hdr nd_na_hdr;

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struct in6_addr nd_na_target; /* target address */

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/* could be followed by options */

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};

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#define nd_na_type nd_na_hdr.icmp6_type

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#define nd_na_code nd_na_hdr.icmp6_code

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#define nd_na_cksum nd_na_hdr.icmp6_cksum

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#define nd_na_flags_reserved nd_na_hdr.icmp6_data32[0]

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#if __BYTE_ORDER == __BIG_ENDIAN

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#define ND_NA_FLAG_ROUTER 0x80000000

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#define ND_NA_FLAG_SOLICITED 0x40000000

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#define ND_NA_FLAG_OVERRIDE 0x20000000

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#else /* __BYTE_ORDER == __LITTLE_ENDIAN */

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#define ND_NA_FLAG_ROUTER 0x00000080

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#define ND_NA_FLAG_SOLICITED 0x00000040

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#define ND_NA_FLAG_OVERRIDE 0x00000020

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#endif

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struct nd_redirect /* redirect */

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{

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struct icmp6_hdr nd_rd_hdr;

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struct in6_addr nd_rd_target; /* target address */

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struct in6_addr nd_rd_dst; /* destination address */

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/* could be followed by options */

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};

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#define nd_rd_type nd_rd_hdr.icmp6_type

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#define nd_rd_code nd_rd_hdr.icmp6_code

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#define nd_rd_cksum nd_rd_hdr.icmp6_cksum

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#define nd_rd_reserved nd_rd_hdr.icmp6_data32[0]

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struct nd_opt_hdr /* Neighbor discovery option header */

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{

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uint8_t nd_opt_type;

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uint8_t nd_opt_len; /* in units of 8 octets */

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/* followed by option specific data */

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};

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#define ND_OPT_SOURCE_LINKADDR 1

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#define ND_OPT_TARGET_LINKADDR 2

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#define ND_OPT_PREFIX_INFORMATION 3

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#define ND_OPT_REDIRECTED_HEADER 4

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#define ND_OPT_MTU 5

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#define ND_OPT_RTR_ADV_INTERVAL 7

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#define ND_OPT_HOME_AGENT_INFO 8

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struct nd_opt_prefix_info /* prefix information */

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{

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uint8_t nd_opt_pi_type;

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uint8_t nd_opt_pi_len;

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uint8_t nd_opt_pi_prefix_len;

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uint8_t nd_opt_pi_flags_reserved;

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uint32_t nd_opt_pi_valid_time;

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uint32_t nd_opt_pi_preferred_time;

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uint32_t nd_opt_pi_reserved2;

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struct in6_addr nd_opt_pi_prefix;

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};

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#define ND_OPT_PI_FLAG_ONLINK 0x80

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#define ND_OPT_PI_FLAG_AUTO 0x40

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#define ND_OPT_PI_FLAG_RADDR 0x20

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struct nd_opt_rd_hdr /* redirected header */

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{

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uint8_t nd_opt_rh_type;

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uint8_t nd_opt_rh_len;

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uint16_t nd_opt_rh_reserved1;

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uint32_t nd_opt_rh_reserved2;

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/* followed by IP header and data */

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};

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struct nd_opt_mtu /* MTU option */

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{

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uint8_t nd_opt_mtu_type;

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uint8_t nd_opt_mtu_len;

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uint16_t nd_opt_mtu_reserved;

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uint32_t nd_opt_mtu_mtu;

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};

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struct mld_hdr

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{

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struct icmp6_hdr mld_icmp6_hdr;

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struct in6_addr mld_addr; /* multicast address */

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};

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#define mld_type mld_icmp6_hdr.icmp6_type

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#define mld_code mld_icmp6_hdr.icmp6_code

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#define mld_cksum mld_icmp6_hdr.icmp6_cksum

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#define mld_maxdelay mld_icmp6_hdr.icmp6_data16[0]

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#define mld_reserved mld_icmp6_hdr.icmp6_data16[1]

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#define ICMP6_ROUTER_RENUMBERING 138

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struct icmp6_router_renum /* router renumbering header */

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{

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struct icmp6_hdr rr_hdr;

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uint8_t rr_segnum;

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uint8_t rr_flags;

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uint16_t rr_maxdelay;

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uint32_t rr_reserved;

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};

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#define rr_type rr_hdr.icmp6_type

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#define rr_code rr_hdr.icmp6_code

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#define rr_cksum rr_hdr.icmp6_cksum

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#define rr_seqnum rr_hdr.icmp6_data32[0]

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/* Router renumbering flags */

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#define ICMP6_RR_FLAGS_TEST 0x80

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#define ICMP6_RR_FLAGS_REQRESULT 0x40

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#define ICMP6_RR_FLAGS_FORCEAPPLY 0x20

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#define ICMP6_RR_FLAGS_SPECSITE 0x10

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#define ICMP6_RR_FLAGS_PREVDONE 0x08

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struct rr_pco_match /* match prefix part */

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{

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uint8_t rpm_code;

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uint8_t rpm_len;

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uint8_t rpm_ordinal;

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uint8_t rpm_matchlen;

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uint8_t rpm_minlen;

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uint8_t rpm_maxlen;

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uint16_t rpm_reserved;

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struct in6_addr rpm_prefix;

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};

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/* PCO code values */

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#define RPM_PCO_ADD 1

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#define RPM_PCO_CHANGE 2

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#define RPM_PCO_SETGLOBAL 3

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struct rr_pco_use /* use prefix part */

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{

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uint8_t rpu_uselen;

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uint8_t rpu_keeplen;

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uint8_t rpu_ramask;

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uint8_t rpu_raflags;

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uint32_t rpu_vltime;

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uint32_t rpu_pltime;

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uint32_t rpu_flags;

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struct in6_addr rpu_prefix;

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};

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#define ICMP6_RR_PCOUSE_RAFLAGS_ONLINK 0x20

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#define ICMP6_RR_PCOUSE_RAFLAGS_AUTO 0x10

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#if __BYTE_ORDER == __BIG_ENDIAN

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# define ICMP6_RR_PCOUSE_FLAGS_DECRVLTIME 0x80000000

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# define ICMP6_RR_PCOUSE_FLAGS_DECRPLTIME 0x40000000

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#elif __BYTE_ORDER == __LITTLE_ENDIAN

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# define ICMP6_RR_PCOUSE_FLAGS_DECRVLTIME 0x80

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# define ICMP6_RR_PCOUSE_FLAGS_DECRPLTIME 0x40

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#endif

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struct rr_result /* router renumbering result message */

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{

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uint16_t rrr_flags;

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uint8_t rrr_ordinal;

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uint8_t rrr_matchedlen;

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uint32_t rrr_ifid;

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struct in6_addr rrr_prefix;

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};

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#if __BYTE_ORDER == __BIG_ENDIAN

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# define ICMP6_RR_RESULT_FLAGS_OOB 0x0002

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# define ICMP6_RR_RESULT_FLAGS_FORBIDDEN 0x0001

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#elif __BYTE_ORDER == __LITTLE_ENDIAN

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# define ICMP6_RR_RESULT_FLAGS_OOB 0x0200

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# define ICMP6_RR_RESULT_FLAGS_FORBIDDEN 0x0100

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#endif

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/* Mobile IPv6 extension: Advertisement Interval. */

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struct nd_opt_adv_interval

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{

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uint8_t nd_opt_adv_interval_type;

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uint8_t nd_opt_adv_interval_len;

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uint16_t nd_opt_adv_interval_reserved;

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uint32_t nd_opt_adv_interval_ival;

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};

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/* Mobile IPv6 extension: Home Agent Info. */

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struct nd_opt_home_agent_info

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{

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uint8_t nd_opt_home_agent_info_type;

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uint8_t nd_opt_home_agent_info_len;

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uint16_t nd_opt_home_agent_info_reserved;

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uint16_t nd_opt_home_agent_info_preference;

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uint16_t nd_opt_home_agent_info_lifetime;

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};

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#endif /* netinet/icmpv6.h */

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