365 lines
12 KiB
C
365 lines
12 KiB
C
/****************************************************************************
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* include/netinet/icmp6.h
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*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed with
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* this work for additional information regarding copyright ownership. The
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* ASF licenses this file to you under the Apache License, Version 2.0 (the
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* "License"); you may not use this file except in compliance with the
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* License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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* License for the specific language governing permissions and limitations
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* under the License.
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*
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****************************************************************************/
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#ifndef __INCLUDE_NETINET_ICMP6_H
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#define __INCLUDE_NETINET_ICMP6_H
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/****************************************************************************
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* Included Files
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****************************************************************************/
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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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/****************************************************************************
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* Pre-processor Definitions
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****************************************************************************/
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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 /* __INCLUDE_NETINET_ICMP6_H */
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