include/netinet/icmp6.h

   1 #ifndef _NETINET_ICMP6_H
   2 #define _NETINET_ICMP6_H
   3
   4 #ifdef __cplusplus
   5 extern "C" {
   6 #endif
   7
   8 #include <stdint.h>
   9 #include <string.h>
  10 #include <sys/types.h>
  11 #include <netinet/in.h>
  12 #include <endian.h>
  13
  14 #define ICMP6_FILTER 1
  15
  16 #define ICMP6_FILTER_BLOCK              1
  17 #define ICMP6_FILTER_PASS               2
  18 #define ICMP6_FILTER_BLOCKOTHERS        3
  19 #define ICMP6_FILTER_PASSONLY           4
  20
  21 struct icmp6_filter {
  22         uint32_t icmp6_filt[8];
  23 };
  24
  25 struct icmp6_hdr {
  26         uint8_t     icmp6_type;
  27         uint8_t     icmp6_code;
  28         uint16_t    icmp6_cksum;
  29         union {
  30                 uint32_t  icmp6_un_data32[1];
  31                 uint16_t  icmp6_un_data16[2];
  32                 uint8_t   icmp6_un_data8[4];
  33         } icmp6_dataun;
  34 };
  35
  36 #define icmp6_data32    icmp6_dataun.icmp6_un_data32
  37 #define icmp6_data16    icmp6_dataun.icmp6_un_data16
  38 #define icmp6_data8     icmp6_dataun.icmp6_un_data8
  39 #define icmp6_pptr      icmp6_data32[0]
  40 #define icmp6_mtu       icmp6_data32[0]
  41 #define icmp6_id        icmp6_data16[0]
  42 #define icmp6_seq       icmp6_data16[1]
  43 #define icmp6_maxdelay  icmp6_data16[0]
  44
  45 #define ICMP6_DST_UNREACH             1
  46 #define ICMP6_PACKET_TOO_BIG          2
  47 #define ICMP6_TIME_EXCEEDED           3
  48 #define ICMP6_PARAM_PROB              4
  49
  50 #define ICMP6_INFOMSG_MASK  0x80
  51
  52 #define ICMP6_ECHO_REQUEST          128
  53 #define ICMP6_ECHO_REPLY            129
  54 #define MLD_LISTENER_QUERY          130
  55 #define MLD_LISTENER_REPORT         131
  56 #define MLD_LISTENER_REDUCTION      132
  57
  58 #define ICMP6_DST_UNREACH_NOROUTE     0
  59 #define ICMP6_DST_UNREACH_ADMIN       1
  60 #define ICMP6_DST_UNREACH_BEYONDSCOPE 2
  61 #define ICMP6_DST_UNREACH_ADDR        3
  62 #define ICMP6_DST_UNREACH_NOPORT      4
  63
  64 #define ICMP6_TIME_EXCEED_TRANSIT     0
  65 #define ICMP6_TIME_EXCEED_REASSEMBLY  1
  66
  67 #define ICMP6_PARAMPROB_HEADER        0
  68 #define ICMP6_PARAMPROB_NEXTHEADER    1
  69 #define ICMP6_PARAMPROB_OPTION        2
  70
  71 #define ICMP6_FILTER_WILLPASS(type, filterp) \
  72         ((((filterp)->icmp6_filt[(type) >> 5]) & (1 << ((type) & 31))) == 0)
  73
  74 #define ICMP6_FILTER_WILLBLOCK(type, filterp) \
  75         ((((filterp)->icmp6_filt[(type) >> 5]) & (1 << ((type) & 31))) != 0)
  76
  77 #define ICMP6_FILTER_SETPASS(type, filterp) \
  78         ((((filterp)->icmp6_filt[(type) >> 5]) &= ~(1 << ((type) & 31))))
  79
  80 #define ICMP6_FILTER_SETBLOCK(type, filterp) \
  81         ((((filterp)->icmp6_filt[(type) >> 5]) |=  (1 << ((type) & 31))))
  82
  83 #define ICMP6_FILTER_SETPASSALL(filterp) \
  84         memset (filterp, 0, sizeof (struct icmp6_filter));
  85
  86 #define ICMP6_FILTER_SETBLOCKALL(filterp) \
  87         memset (filterp, 0xFF, sizeof (struct icmp6_filter));
  88
  89 #define ND_ROUTER_SOLICIT           133
  90 #define ND_ROUTER_ADVERT            134
  91 #define ND_NEIGHBOR_SOLICIT         135
  92 #define ND_NEIGHBOR_ADVERT          136
  93 #define ND_REDIRECT                 137
  94
  95 struct nd_router_solicit {
  96         struct icmp6_hdr  nd_rs_hdr;
  97 };
  98
  99 #define nd_rs_type               nd_rs_hdr.icmp6_type
 100 #define nd_rs_code               nd_rs_hdr.icmp6_code
 101 #define nd_rs_cksum              nd_rs_hdr.icmp6_cksum
 102 #define nd_rs_reserved           nd_rs_hdr.icmp6_data32[0]
 103
 104 struct nd_router_advert {
 105         struct icmp6_hdr  nd_ra_hdr;
 106         uint32_t   nd_ra_reachable;
 107         uint32_t   nd_ra_retransmit;
 108 };
 109
 110 #define nd_ra_type               nd_ra_hdr.icmp6_type
 111 #define nd_ra_code               nd_ra_hdr.icmp6_code
 112 #define nd_ra_cksum              nd_ra_hdr.icmp6_cksum
 113 #define nd_ra_curhoplimit        nd_ra_hdr.icmp6_data8[0]
 114 #define nd_ra_flags_reserved     nd_ra_hdr.icmp6_data8[1]
 115 #define ND_RA_FLAG_MANAGED       0x80
 116 #define ND_RA_FLAG_OTHER         0x40
 117 #define ND_RA_FLAG_HOME_AGENT    0x20
 118 #define nd_ra_router_lifetime    nd_ra_hdr.icmp6_data16[1]
 119
 120 struct nd_neighbor_solicit {
 121         struct icmp6_hdr  nd_ns_hdr;
 122         struct in6_addr   nd_ns_target;
 123 };
 124
 125 #define nd_ns_type               nd_ns_hdr.icmp6_type
 126 #define nd_ns_code               nd_ns_hdr.icmp6_code
 127 #define nd_ns_cksum              nd_ns_hdr.icmp6_cksum
 128 #define nd_ns_reserved           nd_ns_hdr.icmp6_data32[0]
 129
 130 struct nd_neighbor_advert {
 131         struct icmp6_hdr  nd_na_hdr;
 132         struct in6_addr   nd_na_target;
 133 };
 134
 135 #define nd_na_type               nd_na_hdr.icmp6_type
 136 #define nd_na_code               nd_na_hdr.icmp6_code
 137 #define nd_na_cksum              nd_na_hdr.icmp6_cksum
 138 #define nd_na_flags_reserved     nd_na_hdr.icmp6_data32[0]
 139 #if     __BYTE_ORDER == __BIG_ENDIAN
 140 #define ND_NA_FLAG_ROUTER        0x80000000
 141 #define ND_NA_FLAG_SOLICITED     0x40000000
 142 #define ND_NA_FLAG_OVERRIDE      0x20000000
 143 #else
 144 #define ND_NA_FLAG_ROUTER        0x00000080
 145 #define ND_NA_FLAG_SOLICITED     0x00000040
 146 #define ND_NA_FLAG_OVERRIDE      0x00000020
 147 #endif
 148
 149 struct nd_redirect {
 150         struct icmp6_hdr  nd_rd_hdr;
 151         struct in6_addr   nd_rd_target;
 152         struct in6_addr   nd_rd_dst;
 153 };
 154
 155 #define nd_rd_type               nd_rd_hdr.icmp6_type
 156 #define nd_rd_code               nd_rd_hdr.icmp6_code
 157 #define nd_rd_cksum              nd_rd_hdr.icmp6_cksum
 158 #define nd_rd_reserved           nd_rd_hdr.icmp6_data32[0]
 159
 160 struct nd_opt_hdr {
 161         uint8_t  nd_opt_type;
 162         uint8_t  nd_opt_len;
 163 };
 164
 165 #define ND_OPT_SOURCE_LINKADDR          1
 166 #define ND_OPT_TARGET_LINKADDR          2
 167 #define ND_OPT_PREFIX_INFORMATION       3
 168 #define ND_OPT_REDIRECTED_HEADER        4
 169 #define ND_OPT_MTU                      5
 170 #define ND_OPT_RTR_ADV_INTERVAL         7
 171 #define ND_OPT_HOME_AGENT_INFO          8
 172
 173 struct nd_opt_prefix_info {
 174         uint8_t   nd_opt_pi_type;
 175         uint8_t   nd_opt_pi_len;
 176         uint8_t   nd_opt_pi_prefix_len;
 177         uint8_t   nd_opt_pi_flags_reserved;
 178         uint32_t  nd_opt_pi_valid_time;
 179         uint32_t  nd_opt_pi_preferred_time;
 180         uint32_t  nd_opt_pi_reserved2;
 181         struct in6_addr  nd_opt_pi_prefix;
 182 };
 183
 184 #define ND_OPT_PI_FLAG_ONLINK   0x80
 185 #define ND_OPT_PI_FLAG_AUTO     0x40
 186 #define ND_OPT_PI_FLAG_RADDR    0x20
 187
 188 struct nd_opt_rd_hdr {
 189         uint8_t   nd_opt_rh_type;
 190         uint8_t   nd_opt_rh_len;
 191         uint16_t  nd_opt_rh_reserved1;
 192         uint32_t  nd_opt_rh_reserved2;
 193 };
 194
 195 struct nd_opt_mtu {
 196         uint8_t   nd_opt_mtu_type;
 197         uint8_t   nd_opt_mtu_len;
 198         uint16_t  nd_opt_mtu_reserved;
 199         uint32_t  nd_opt_mtu_mtu;
 200 };
 201
 202 struct mld_hdr {
 203         struct icmp6_hdr    mld_icmp6_hdr;
 204         struct in6_addr     mld_addr;
 205 };
 206
 207 #define mld_type        mld_icmp6_hdr.icmp6_type
 208 #define mld_code        mld_icmp6_hdr.icmp6_code
 209 #define mld_cksum       mld_icmp6_hdr.icmp6_cksum
 210 #define mld_maxdelay    mld_icmp6_hdr.icmp6_data16[0]
 211 #define mld_reserved    mld_icmp6_hdr.icmp6_data16[1]
 212
 213 #define ICMP6_ROUTER_RENUMBERING    138
 214
 215 struct icmp6_router_renum {
 216         struct icmp6_hdr    rr_hdr;
 217         uint8_t             rr_segnum;
 218         uint8_t             rr_flags;
 219         uint16_t            rr_maxdelay;
 220         uint32_t            rr_reserved;
 221 };
 222
 223 #define rr_type         rr_hdr.icmp6_type
 224 #define rr_code         rr_hdr.icmp6_code
 225 #define rr_cksum        rr_hdr.icmp6_cksum
 226 #define rr_seqnum       rr_hdr.icmp6_data32[0]
 227
 228 #define ICMP6_RR_FLAGS_TEST             0x80
 229 #define ICMP6_RR_FLAGS_REQRESULT        0x40
 230 #define ICMP6_RR_FLAGS_FORCEAPPLY       0x20
 231 #define ICMP6_RR_FLAGS_SPECSITE         0x10
 232 #define ICMP6_RR_FLAGS_PREVDONE         0x08
 233
 234 struct rr_pco_match {
 235         uint8_t             rpm_code;
 236         uint8_t             rpm_len;
 237         uint8_t             rpm_ordinal;
 238         uint8_t             rpm_matchlen;
 239         uint8_t             rpm_minlen;
 240         uint8_t             rpm_maxlen;
 241         uint16_t            rpm_reserved;
 242         struct in6_addr     rpm_prefix;
 243 };
 244
 245 #define RPM_PCO_ADD             1
 246 #define RPM_PCO_CHANGE          2
 247 #define RPM_PCO_SETGLOBAL       3
 248
 249 struct rr_pco_use {
 250         uint8_t             rpu_uselen;
 251         uint8_t             rpu_keeplen;
 252         uint8_t             rpu_ramask;
 253         uint8_t             rpu_raflags;
 254         uint32_t            rpu_vltime;
 255         uint32_t            rpu_pltime;
 256         uint32_t            rpu_flags;
 257         struct in6_addr     rpu_prefix;
 258 };
 259
 260 #define ICMP6_RR_PCOUSE_RAFLAGS_ONLINK  0x20
 261 #define ICMP6_RR_PCOUSE_RAFLAGS_AUTO    0x10
 262
 263 #if __BYTE_ORDER == __BIG_ENDIAN
 264 #define ICMP6_RR_PCOUSE_FLAGS_DECRVLTIME 0x80000000
 265 #define ICMP6_RR_PCOUSE_FLAGS_DECRPLTIME 0x40000000
 266 #else
 267 #define ICMP6_RR_PCOUSE_FLAGS_DECRVLTIME 0x80
 268 #define ICMP6_RR_PCOUSE_FLAGS_DECRPLTIME 0x40
 269 #endif
 270
 271 struct rr_result {
 272         uint16_t            rrr_flags;
 273         uint8_t             rrr_ordinal;
 274         uint8_t             rrr_matchedlen;
 275         uint32_t            rrr_ifid;
 276         struct in6_addr     rrr_prefix;
 277 };
 278
 279 #if __BYTE_ORDER == __BIG_ENDIAN
 280 #define ICMP6_RR_RESULT_FLAGS_OOB       0x0002
 281 #define ICMP6_RR_RESULT_FLAGS_FORBIDDEN 0x0001
 282 #else
 283 #define ICMP6_RR_RESULT_FLAGS_OOB       0x0200
 284 #define ICMP6_RR_RESULT_FLAGS_FORBIDDEN 0x0100
 285 #endif
 286
 287 struct nd_opt_adv_interval {
 288         uint8_t   nd_opt_adv_interval_type;
 289         uint8_t   nd_opt_adv_interval_len;
 290         uint16_t  nd_opt_adv_interval_reserved;
 291         uint32_t  nd_opt_adv_interval_ival;
 292 };
 293
 294 struct nd_opt_home_agent_info {
 295         uint8_t   nd_opt_home_agent_info_type;
 296         uint8_t   nd_opt_home_agent_info_len;
 297         uint16_t  nd_opt_home_agent_info_reserved;
 298         uint16_t  nd_opt_home_agent_info_preference;
 299         uint16_t  nd_opt_home_agent_info_lifetime;
 300 };
 301
 302 #ifdef __cplusplus
 303 }
 304 #endif
 305
 306 #endif