The C and C++ Include Header Files

/usr/include/netinet/icmp6.h


$ cat -n /usr/include/netinet/icmp6.h

     1	/* Copyright (C) 1991-2024 Free Software Foundation, Inc.
     2	   This file is part of the GNU C Library.
     3	
     4	   The GNU C Library is free software; you can redistribute it and/or
     5	   modify it under the terms of the GNU Lesser General Public
     6	   License as published by the Free Software Foundation; either
     7	   version 2.1 of the License, or (at your option) any later version.
     8	
     9	   The GNU C Library is distributed in the hope that it will be useful,
    10	   but WITHOUT ANY WARRANTY; without even the implied warranty of
    11	   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
    12	   Lesser General Public License for more details.
    13	
    14	   You should have received a copy of the GNU Lesser General Public
    15	   License along with the GNU C Library; if not, see
    16	   <https://www.gnu.org/licenses/>.  */
    17	
    18	#ifndef _NETINET_ICMP6_H
    19	#define _NETINET_ICMP6_H 1
    20	
    21	#include <inttypes.h>
    22	#include <string.h>
    23	#include <sys/types.h>
    24	#include <netinet/in.h>
    25	
    26	#define ICMP6_FILTER 1
    27	
    28	#define ICMP6_FILTER_BLOCK		1
    29	#define ICMP6_FILTER_PASS		2
    30	#define ICMP6_FILTER_BLOCKOTHERS	3
    31	#define ICMP6_FILTER_PASSONLY		4
    32	
    33	struct icmp6_filter
    34	  {
    35	    uint32_t icmp6_filt[8];
    36	  };
    37	
    38	struct icmp6_hdr
    39	  {
    40	    uint8_t     icmp6_type;   /* type field */
    41	    uint8_t     icmp6_code;   /* code field */
    42	    uint16_t    icmp6_cksum;  /* checksum field */
    43	    union
    44	      {
    45		uint32_t  icmp6_un_data32[1]; /* type-specific field */
    46		uint16_t  icmp6_un_data16[2]; /* type-specific field */
    47		uint8_t   icmp6_un_data8[4];  /* type-specific field */
    48	      } icmp6_dataun;
    49	  };
    50	
    51	#define icmp6_data32    icmp6_dataun.icmp6_un_data32
    52	#define icmp6_data16    icmp6_dataun.icmp6_un_data16
    53	#define icmp6_data8     icmp6_dataun.icmp6_un_data8
    54	#define icmp6_pptr      icmp6_data32[0]  /* parameter prob */
    55	#define icmp6_mtu       icmp6_data32[0]  /* packet too big */
    56	#define icmp6_id        icmp6_data16[0]  /* echo request/reply */
    57	#define icmp6_seq       icmp6_data16[1]  /* echo request/reply */
    58	#define icmp6_maxdelay  icmp6_data16[0]  /* mcast group membership */
    59	
    60	#define ICMP6_DST_UNREACH             1
    61	#define ICMP6_PACKET_TOO_BIG          2
    62	#define ICMP6_TIME_EXCEEDED           3
    63	#define ICMP6_PARAM_PROB              4
    64	
    65	#define ICMP6_INFOMSG_MASK  0x80    /* all informational messages */
    66	
    67	#define ICMP6_ECHO_REQUEST          128
    68	#define ICMP6_ECHO_REPLY            129
    69	#define MLD_LISTENER_QUERY          130
    70	#define MLD_LISTENER_REPORT         131
    71	#define MLD_LISTENER_REDUCTION      132
    72	#define ICMPV6_EXT_ECHO_REQUEST	    160
    73	#define ICMPV6_EXT_ECHO_REPLY	    161
    74	
    75	#define ICMP6_DST_UNREACH_NOROUTE     0 /* no route to destination */
    76	#define ICMP6_DST_UNREACH_ADMIN       1 /* communication with destination */
    77	                                        /* administratively prohibited */
    78	#define ICMP6_DST_UNREACH_BEYONDSCOPE 2 /* beyond scope of source address */
    79	#define ICMP6_DST_UNREACH_ADDR        3 /* address unreachable */
    80	#define ICMP6_DST_UNREACH_NOPORT      4 /* bad port */
    81	
    82	#define ICMP6_TIME_EXCEED_TRANSIT     0 /* Hop Limit == 0 in transit */
    83	#define ICMP6_TIME_EXCEED_REASSEMBLY  1 /* Reassembly time out */
    84	
    85	#define ICMP6_PARAMPROB_HEADER        0 /* erroneous header field */
    86	#define ICMP6_PARAMPROB_NEXTHEADER    1 /* unrecognized Next Header */
    87	#define ICMP6_PARAMPROB_OPTION        2 /* unrecognized IPv6 option */
    88	
    89	#define ICMP6_FILTER_WILLPASS(type, filterp) \
    90		((((filterp)->icmp6_filt[(type) >> 5]) & (1U << ((type) & 31))) == 0)
    91	
    92	#define ICMP6_FILTER_WILLBLOCK(type, filterp) \
    93		((((filterp)->icmp6_filt[(type) >> 5]) & (1U << ((type) & 31))) != 0)
    94	
    95	#define ICMP6_FILTER_SETPASS(type, filterp) \
    96		((((filterp)->icmp6_filt[(type) >> 5]) &= ~(1U << ((type) & 31))))
    97	
    98	#define ICMP6_FILTER_SETBLOCK(type, filterp) \
    99		((((filterp)->icmp6_filt[(type) >> 5]) |=  (1U << ((type) & 31))))
   100	
   101	#define ICMP6_FILTER_SETPASSALL(filterp) \
   102		memset (filterp, 0, sizeof (struct icmp6_filter));
   103	
   104	#define ICMP6_FILTER_SETBLOCKALL(filterp) \
   105		memset (filterp, 0xFF, sizeof (struct icmp6_filter));
   106	
   107	#define ND_ROUTER_SOLICIT           133
   108	#define ND_ROUTER_ADVERT            134
   109	#define ND_NEIGHBOR_SOLICIT         135
   110	#define ND_NEIGHBOR_ADVERT          136
   111	#define ND_REDIRECT                 137
   112	
   113	struct nd_router_solicit      /* router solicitation */
   114	  {
   115	    struct icmp6_hdr  nd_rs_hdr;
   116	    /* could be followed by options */
   117	  };
   118	
   119	#define nd_rs_type               nd_rs_hdr.icmp6_type
   120	#define nd_rs_code               nd_rs_hdr.icmp6_code
   121	#define nd_rs_cksum              nd_rs_hdr.icmp6_cksum
   122	#define nd_rs_reserved           nd_rs_hdr.icmp6_data32[0]
   123	
   124	struct nd_router_advert       /* router advertisement */
   125	  {
   126	    struct icmp6_hdr  nd_ra_hdr;
   127	    uint32_t   nd_ra_reachable;   /* reachable time */
   128	    uint32_t   nd_ra_retransmit;  /* retransmit timer */
   129	    /* could be followed by options */
   130	  };
   131	
   132	#define nd_ra_type               nd_ra_hdr.icmp6_type
   133	#define nd_ra_code               nd_ra_hdr.icmp6_code
   134	#define nd_ra_cksum              nd_ra_hdr.icmp6_cksum
   135	#define nd_ra_curhoplimit        nd_ra_hdr.icmp6_data8[0]
   136	#define nd_ra_flags_reserved     nd_ra_hdr.icmp6_data8[1]
   137	#define ND_RA_FLAG_MANAGED       0x80
   138	#define ND_RA_FLAG_OTHER         0x40
   139	#define ND_RA_FLAG_HOME_AGENT    0x20
   140	#define nd_ra_router_lifetime    nd_ra_hdr.icmp6_data16[1]
   141	
   142	struct nd_neighbor_solicit    /* neighbor solicitation */
   143	  {
   144	    struct icmp6_hdr  nd_ns_hdr;
   145	    struct in6_addr   nd_ns_target; /* target address */
   146	    /* could be followed by options */
   147	  };
   148	
   149	#define nd_ns_type               nd_ns_hdr.icmp6_type
   150	#define nd_ns_code               nd_ns_hdr.icmp6_code
   151	#define nd_ns_cksum              nd_ns_hdr.icmp6_cksum
   152	#define nd_ns_reserved           nd_ns_hdr.icmp6_data32[0]
   153	
   154	struct nd_neighbor_advert     /* neighbor advertisement */
   155	  {
   156	    struct icmp6_hdr  nd_na_hdr;
   157	    struct in6_addr   nd_na_target; /* target address */
   158	    /* could be followed by options */
   159	  };
   160	
   161	#define nd_na_type               nd_na_hdr.icmp6_type
   162	#define nd_na_code               nd_na_hdr.icmp6_code
   163	#define nd_na_cksum              nd_na_hdr.icmp6_cksum
   164	#define nd_na_flags_reserved     nd_na_hdr.icmp6_data32[0]
   165	#if     __BYTE_ORDER == __BIG_ENDIAN
   166	#define ND_NA_FLAG_ROUTER        0x80000000
   167	#define ND_NA_FLAG_SOLICITED     0x40000000
   168	#define ND_NA_FLAG_OVERRIDE      0x20000000
   169	#else   /* __BYTE_ORDER == __LITTLE_ENDIAN */
   170	#define ND_NA_FLAG_ROUTER        0x00000080
   171	#define ND_NA_FLAG_SOLICITED     0x00000040
   172	#define ND_NA_FLAG_OVERRIDE      0x00000020
   173	#endif
   174	
   175	struct nd_redirect            /* redirect */
   176	  {
   177	    struct icmp6_hdr  nd_rd_hdr;
   178	    struct in6_addr   nd_rd_target; /* target address */
   179	    struct in6_addr   nd_rd_dst;    /* destination address */
   180	    /* could be followed by options */
   181	  };
   182	
   183	#define nd_rd_type               nd_rd_hdr.icmp6_type
   184	#define nd_rd_code               nd_rd_hdr.icmp6_code
   185	#define nd_rd_cksum              nd_rd_hdr.icmp6_cksum
   186	#define nd_rd_reserved           nd_rd_hdr.icmp6_data32[0]
   187	
   188	struct nd_opt_hdr             /* Neighbor discovery option header */
   189	  {
   190	    uint8_t  nd_opt_type;
   191	    uint8_t  nd_opt_len;        /* in units of 8 octets */
   192	    /* followed by option specific data */
   193	  };
   194	
   195	#define ND_OPT_SOURCE_LINKADDR		1
   196	#define ND_OPT_TARGET_LINKADDR		2
   197	#define ND_OPT_PREFIX_INFORMATION	3
   198	#define ND_OPT_REDIRECTED_HEADER	4
   199	#define ND_OPT_MTU			5
   200	#define ND_OPT_RTR_ADV_INTERVAL		7
   201	#define ND_OPT_HOME_AGENT_INFO		8
   202	
   203	struct nd_opt_prefix_info     /* prefix information */
   204	  {
   205	    uint8_t   nd_opt_pi_type;
   206	    uint8_t   nd_opt_pi_len;
   207	    uint8_t   nd_opt_pi_prefix_len;
   208	    uint8_t   nd_opt_pi_flags_reserved;
   209	    uint32_t  nd_opt_pi_valid_time;
   210	    uint32_t  nd_opt_pi_preferred_time;
   211	    uint32_t  nd_opt_pi_reserved2;
   212	    struct in6_addr  nd_opt_pi_prefix;
   213	  };
   214	
   215	#define ND_OPT_PI_FLAG_ONLINK	0x80
   216	#define ND_OPT_PI_FLAG_AUTO	0x40
   217	#define ND_OPT_PI_FLAG_RADDR	0x20
   218	
   219	struct nd_opt_rd_hdr          /* redirected header */
   220	  {
   221	    uint8_t   nd_opt_rh_type;
   222	    uint8_t   nd_opt_rh_len;
   223	    uint16_t  nd_opt_rh_reserved1;
   224	    uint32_t  nd_opt_rh_reserved2;
   225	    /* followed by IP header and data */
   226	  };
   227	
   228	struct nd_opt_mtu             /* MTU option */
   229	  {
   230	    uint8_t   nd_opt_mtu_type;
   231	    uint8_t   nd_opt_mtu_len;
   232	    uint16_t  nd_opt_mtu_reserved;
   233	    uint32_t  nd_opt_mtu_mtu;
   234	  };
   235	
   236	struct mld_hdr
   237	  {
   238	    struct icmp6_hdr    mld_icmp6_hdr;
   239	    struct in6_addr     mld_addr; /* multicast address */
   240	  };
   241	
   242	#define mld_type        mld_icmp6_hdr.icmp6_type
   243	#define mld_code        mld_icmp6_hdr.icmp6_code
   244	#define mld_cksum       mld_icmp6_hdr.icmp6_cksum
   245	#define mld_maxdelay    mld_icmp6_hdr.icmp6_data16[0]
   246	#define mld_reserved    mld_icmp6_hdr.icmp6_data16[1]
   247	
   248	#define ICMP6_ROUTER_RENUMBERING    138
   249	
   250	struct icmp6_router_renum    /* router renumbering header */
   251	  {
   252	    struct icmp6_hdr    rr_hdr;
   253	    uint8_t             rr_segnum;
   254	    uint8_t             rr_flags;
   255	    uint16_t            rr_maxdelay;
   256	    uint32_t            rr_reserved;
   257	  };
   258	
   259	#define rr_type		rr_hdr.icmp6_type
   260	#define rr_code         rr_hdr.icmp6_code
   261	#define rr_cksum        rr_hdr.icmp6_cksum
   262	#define rr_seqnum       rr_hdr.icmp6_data32[0]
   263	
   264	/* Router renumbering flags */
   265	#define ICMP6_RR_FLAGS_TEST             0x80
   266	#define ICMP6_RR_FLAGS_REQRESULT        0x40
   267	#define ICMP6_RR_FLAGS_FORCEAPPLY       0x20
   268	#define ICMP6_RR_FLAGS_SPECSITE         0x10
   269	#define ICMP6_RR_FLAGS_PREVDONE         0x08
   270	
   271	struct rr_pco_match    /* match prefix part */
   272	  {
   273	    uint8_t             rpm_code;
   274	    uint8_t             rpm_len;
   275	    uint8_t             rpm_ordinal;
   276	    uint8_t             rpm_matchlen;
   277	    uint8_t             rpm_minlen;
   278	    uint8_t             rpm_maxlen;
   279	    uint16_t            rpm_reserved;
   280	    struct in6_addr     rpm_prefix;
   281	  };
   282	
   283	/* PCO code values */
   284	#define RPM_PCO_ADD             1
   285	#define RPM_PCO_CHANGE          2
   286	#define RPM_PCO_SETGLOBAL       3
   287	
   288	struct rr_pco_use      /* use prefix part */
   289	  {
   290	    uint8_t             rpu_uselen;
   291	    uint8_t             rpu_keeplen;
   292	    uint8_t             rpu_ramask;
   293	    uint8_t             rpu_raflags;
   294	    uint32_t            rpu_vltime;
   295	    uint32_t            rpu_pltime;
   296	    uint32_t            rpu_flags;
   297	    struct in6_addr     rpu_prefix;
   298	  };
   299	
   300	#define ICMP6_RR_PCOUSE_RAFLAGS_ONLINK  0x20
   301	#define ICMP6_RR_PCOUSE_RAFLAGS_AUTO    0x10
   302	
   303	#if __BYTE_ORDER == __BIG_ENDIAN
   304	# define ICMP6_RR_PCOUSE_FLAGS_DECRVLTIME 0x80000000
   305	# define ICMP6_RR_PCOUSE_FLAGS_DECRPLTIME 0x40000000
   306	#elif __BYTE_ORDER == __LITTLE_ENDIAN
   307	# define ICMP6_RR_PCOUSE_FLAGS_DECRVLTIME 0x80
   308	# define ICMP6_RR_PCOUSE_FLAGS_DECRPLTIME 0x40
   309	#endif
   310	
   311	struct rr_result       /* router renumbering result message */
   312	  {
   313	    uint16_t            rrr_flags;
   314	    uint8_t             rrr_ordinal;
   315	    uint8_t             rrr_matchedlen;
   316	    uint32_t            rrr_ifid;
   317	    struct in6_addr     rrr_prefix;
   318	  };
   319	
   320	#if __BYTE_ORDER == __BIG_ENDIAN
   321	# define ICMP6_RR_RESULT_FLAGS_OOB       0x0002
   322	# define ICMP6_RR_RESULT_FLAGS_FORBIDDEN 0x0001
   323	#elif __BYTE_ORDER == __LITTLE_ENDIAN
   324	# define ICMP6_RR_RESULT_FLAGS_OOB       0x0200
   325	# define ICMP6_RR_RESULT_FLAGS_FORBIDDEN 0x0100
   326	#endif
   327	
   328	/* Mobile IPv6 extension: Advertisement Interval.  */
   329	struct nd_opt_adv_interval
   330	  {
   331	    uint8_t   nd_opt_adv_interval_type;
   332	    uint8_t   nd_opt_adv_interval_len;
   333	    uint16_t  nd_opt_adv_interval_reserved;
   334	    uint32_t  nd_opt_adv_interval_ival;
   335	  };
   336	
   337	/* Mobile IPv6 extension: Home Agent Info.  */
   338	struct nd_opt_home_agent_info
   339	  {
   340	    uint8_t   nd_opt_home_agent_info_type;
   341	    uint8_t   nd_opt_home_agent_info_len;
   342	    uint16_t  nd_opt_home_agent_info_reserved;
   343	    uint16_t  nd_opt_home_agent_info_preference;
   344	    uint16_t  nd_opt_home_agent_info_lifetime;
   345	  };
   346	
   347	#endif /* netinet/icmpv6.h */