The Tcpdump Group git mirrors - tcpdump/blob - print-aodv.c

   1 /*
   2  * Copyright (c) 2003 Bruce M. Simpson <bms@spc.org>
   3  * All rights reserved.
   4  *
   5  * Redistribution and use in source and binary forms, with or without
   6  * modification, are permitted provided that the following conditions
   7  * are met:
   8  * 1. Redistributions of source code must retain the above copyright
   9  *    notice, this list of conditions and the following disclaimer.
  10  * 2. Redistributions in binary form must reproduce the above copyright
  11  *    notice, this list of conditions and the following disclaimer in the
  12  *    documentation and/or other materials provided with the distribution.
  13  * 3. All advertising materials mentioning features or use of this software
  14  *    must display the following acknowledgement:
  15  *        This product includes software developed by Bruce M. Simpson.
  16  * 4. Neither the name of Bruce M. Simpson nor the names of co-
  17  *    contributors may be used to endorse or promote products derived
  18  *    from this software without specific prior written permission.
  19  *
  20  * THIS SOFTWARE IS PROVIDED BY Bruce M. Simpson AND CONTRIBUTORS
  21  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
  22  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  23  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL Bruce M. Simpson OR CONTRIBUTORS
  24  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  25  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  26  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  27  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  28  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  29  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  30  * POSSIBILITY OF SUCH DAMAGE.
  31  */
  32
  33 #ifdef HAVE_CONFIG_H
  34 #include "config.h"
  35 #endif
  36
  37 #include <tcpdump-stdinc.h>
  38
  39 #include "netdissect.h"
  40 #include "addrtoname.h"
  41 #include "extract.h"                    /* must come after interface.h */
  42
  43
  44 struct aodv_rreq {
  45         uint8_t         rreq_type;      /* AODV message type (1) */
  46         uint8_t         rreq_flags;     /* various flags */
  47         uint8_t         rreq_zero0;     /* reserved, set to zero */
  48         uint8_t         rreq_hops;      /* number of hops from originator */
  49         uint32_t        rreq_id;        /* request ID */
  50         uint32_t        rreq_da;        /* destination IPv4 address */
  51         uint32_t        rreq_ds;        /* destination sequence number */
  52         uint32_t        rreq_oa;        /* originator IPv4 address */
  53         uint32_t        rreq_os;        /* originator sequence number */
  54 };
  55 #ifdef INET6
  56 struct aodv_rreq6 {
  57         uint8_t         rreq_type;      /* AODV message type (1) */
  58         uint8_t         rreq_flags;     /* various flags */
  59         uint8_t         rreq_zero0;     /* reserved, set to zero */
  60         uint8_t         rreq_hops;      /* number of hops from originator */
  61         uint32_t        rreq_id;        /* request ID */
  62         struct in6_addr rreq_da;        /* destination IPv6 address */
  63         uint32_t        rreq_ds;        /* destination sequence number */
  64         struct in6_addr rreq_oa;        /* originator IPv6 address */
  65         uint32_t        rreq_os;        /* originator sequence number */
  66 };
  67 struct aodv_rreq6_draft_01 {
  68         uint8_t         rreq_type;      /* AODV message type (16) */
  69         uint8_t         rreq_flags;     /* various flags */
  70         uint8_t         rreq_zero0;     /* reserved, set to zero */
  71         uint8_t         rreq_hops;      /* number of hops from originator */
  72         uint32_t        rreq_id;        /* request ID */
  73         uint32_t        rreq_ds;        /* destination sequence number */
  74         uint32_t        rreq_os;        /* originator sequence number */
  75         struct in6_addr rreq_da;        /* destination IPv6 address */
  76         struct in6_addr rreq_oa;        /* originator IPv6 address */
  77 };
  78 #endif
  79
  80 #define RREQ_JOIN       0x80            /* join (reserved for multicast */
  81 #define RREQ_REPAIR     0x40            /* repair (reserved for multicast */
  82 #define RREQ_GRAT       0x20            /* gratuitous RREP */
  83 #define RREQ_DEST       0x10            /* destination only */
  84 #define RREQ_UNKNOWN    0x08            /* unknown destination sequence num */
  85 #define RREQ_FLAGS_MASK 0xF8            /* mask for rreq_flags */
  86
  87 struct aodv_rrep {
  88         uint8_t         rrep_type;      /* AODV message type (2) */
  89         uint8_t         rrep_flags;     /* various flags */
  90         uint8_t         rrep_ps;        /* prefix size */
  91         uint8_t         rrep_hops;      /* number of hops from o to d */
  92         uint32_t        rrep_da;        /* destination IPv4 address */
  93         uint32_t        rrep_ds;        /* destination sequence number */
  94         uint32_t        rrep_oa;        /* originator IPv4 address */
  95         uint32_t        rrep_life;      /* lifetime of this route */
  96 };
  97 #ifdef INET6
  98 struct aodv_rrep6 {
  99         uint8_t         rrep_type;      /* AODV message type (2) */
 100         uint8_t         rrep_flags;     /* various flags */
 101         uint8_t         rrep_ps;        /* prefix size */
 102         uint8_t         rrep_hops;      /* number of hops from o to d */
 103         struct in6_addr rrep_da;        /* destination IPv6 address */
 104         uint32_t        rrep_ds;        /* destination sequence number */
 105         struct in6_addr rrep_oa;        /* originator IPv6 address */
 106         uint32_t        rrep_life;      /* lifetime of this route */
 107 };
 108 struct aodv_rrep6_draft_01 {
 109         uint8_t         rrep_type;      /* AODV message type (17) */
 110         uint8_t         rrep_flags;     /* various flags */
 111         uint8_t         rrep_ps;        /* prefix size */
 112         uint8_t         rrep_hops;      /* number of hops from o to d */
 113         uint32_t        rrep_ds;        /* destination sequence number */
 114         struct in6_addr rrep_da;        /* destination IPv6 address */
 115         struct in6_addr rrep_oa;        /* originator IPv6 address */
 116         uint32_t        rrep_life;      /* lifetime of this route */
 117 };
 118 #endif
 119
 120 #define RREP_REPAIR             0x80    /* repair (reserved for multicast */
 121 #define RREP_ACK                0x40    /* acknowledgement required */
 122 #define RREP_FLAGS_MASK         0xC0    /* mask for rrep_flags */
 123 #define RREP_PREFIX_MASK        0x1F    /* mask for prefix size */
 124
 125 struct rerr_unreach {
 126         uint32_t        u_da;   /* IPv4 address */
 127         uint32_t        u_ds;   /* sequence number */
 128 };
 129 #ifdef INET6
 130 struct rerr_unreach6 {
 131         struct in6_addr u_da;   /* IPv6 address */
 132         uint32_t        u_ds;   /* sequence number */
 133 };
 134 struct rerr_unreach6_draft_01 {
 135         struct in6_addr u_da;   /* IPv6 address */
 136         uint32_t        u_ds;   /* sequence number */
 137 };
 138 #endif
 139
 140 struct aodv_rerr {
 141         uint8_t         rerr_type;      /* AODV message type (3 or 18) */
 142         uint8_t         rerr_flags;     /* various flags */
 143         uint8_t         rerr_zero0;     /* reserved, set to zero */
 144         uint8_t         rerr_dc;        /* destination count */
 145 };
 146
 147 #define RERR_NODELETE           0x80    /* don't delete the link */
 148 #define RERR_FLAGS_MASK         0x80    /* mask for rerr_flags */
 149
 150 struct aodv_rrep_ack {
 151         uint8_t         ra_type;
 152         uint8_t         ra_zero0;
 153 };
 154
 155 #define AODV_RREQ               1       /* route request */
 156 #define AODV_RREP               2       /* route response */
 157 #define AODV_RERR               3       /* error report */
 158 #define AODV_RREP_ACK           4       /* route response acknowledgement */
 159
 160 #define AODV_V6_DRAFT_01_RREQ           16      /* IPv6 route request */
 161 #define AODV_V6_DRAFT_01_RREP           17      /* IPv6 route response */
 162 #define AODV_V6_DRAFT_01_RERR           18      /* IPv6 error report */
 163 #define AODV_V6_DRAFT_01_RREP_ACK       19      /* IPV6 route response acknowledgment */
 164
 165 struct aodv_ext {
 166         uint8_t         type;           /* extension type */
 167         uint8_t         length;         /* extension length */
 168 };
 169
 170 struct aodv_hello {
 171         struct  aodv_ext        eh;             /* extension header */
 172         uint8_t                 interval[4];    /* expect my next hello in
 173                                                  * (n) ms
 174                                                  * NOTE: this is not aligned */
 175 };
 176
 177 #define AODV_EXT_HELLO  1
 178
 179 static void
 180 aodv_extension(netdissect_options *ndo,
 181                const struct aodv_ext *ep, u_int length)
 182 {
 183         const struct aodv_hello *ah;
 184
 185         switch (ep->type) {
 186         case AODV_EXT_HELLO:
 187                 ah = (const struct aodv_hello *)(const void *)ep;
 188                 ND_TCHECK(*ah);
 189                 if (length < sizeof(struct aodv_hello))
 190                         goto trunc;
 191                 ND_PRINT((ndo, "\n\text HELLO %ld ms",
 192                     (unsigned long)EXTRACT_32BITS(&ah->interval)));
 193                 break;
 194
 195         default:
 196                 ND_PRINT((ndo, "\n\text %u %u", ep->type, ep->length));
 197                 break;
 198         }
 199         return;
 200
 201 trunc:
 202         ND_PRINT((ndo, " [|hello]"));
 203 }
 204
 205 static void
 206 aodv_rreq(netdissect_options *ndo, const u_char *dat, u_int length)
 207 {
 208         u_int i;
 209         const struct aodv_rreq *ap = (const struct aodv_rreq *)dat;
 210
 211         ND_TCHECK(*ap);
 212         if (length < sizeof(*ap))
 213                 goto trunc;
 214         ND_PRINT((ndo, " rreq %u %s%s%s%s%shops %u id 0x%08lx\n"
 215             "\tdst %s seq %lu src %s seq %lu", length,
 216             ap->rreq_type & RREQ_JOIN ? "[J]" : "",
 217             ap->rreq_type & RREQ_REPAIR ? "[R]" : "",
 218             ap->rreq_type & RREQ_GRAT ? "[G]" : "",
 219             ap->rreq_type & RREQ_DEST ? "[D]" : "",
 220             ap->rreq_type & RREQ_UNKNOWN ? "[U] " : " ",
 221             ap->rreq_hops,
 222             (unsigned long)EXTRACT_32BITS(&ap->rreq_id),
 223             ipaddr_string(ndo, &ap->rreq_da),
 224             (unsigned long)EXTRACT_32BITS(&ap->rreq_ds),
 225             ipaddr_string(ndo, &ap->rreq_oa),
 226             (unsigned long)EXTRACT_32BITS(&ap->rreq_os)));
 227         i = length - sizeof(*ap);
 228         if (i >= sizeof(struct aodv_ext))
 229                 aodv_extension(ndo, (const struct aodv_ext *)(dat + sizeof(*ap)), i);
 230         return;
 231
 232 trunc:
 233         ND_PRINT((ndo, " [|rreq"));
 234 }
 235
 236 static void
 237 aodv_rrep(netdissect_options *ndo, const u_char *dat, u_int length)
 238 {
 239         u_int i;
 240         const struct aodv_rrep *ap = (const struct aodv_rrep *)dat;
 241
 242         ND_TCHECK(*ap);
 243         if (length < sizeof(*ap))
 244                 goto trunc;
 245         ND_PRINT((ndo, " rrep %u %s%sprefix %u hops %u\n"
 246             "\tdst %s dseq %lu src %s %lu ms", length,
 247             ap->rrep_type & RREP_REPAIR ? "[R]" : "",
 248             ap->rrep_type & RREP_ACK ? "[A] " : " ",
 249             ap->rrep_ps & RREP_PREFIX_MASK,
 250             ap->rrep_hops,
 251             ipaddr_string(ndo, &ap->rrep_da),
 252             (unsigned long)EXTRACT_32BITS(&ap->rrep_ds),
 253             ipaddr_string(ndo, &ap->rrep_oa),
 254             (unsigned long)EXTRACT_32BITS(&ap->rrep_life)));
 255         i = length - sizeof(*ap);
 256         if (i >= sizeof(struct aodv_ext))
 257                 aodv_extension(ndo, (const struct aodv_ext *)(dat + sizeof(*ap)), i);
 258         return;
 259
 260 trunc:
 261         ND_PRINT((ndo, " [|rreq"));
 262 }
 263
 264 static void
 265 aodv_rerr(netdissect_options *ndo, const u_char *dat, u_int length)
 266 {
 267         u_int i, dc;
 268         const struct aodv_rerr *ap = (const struct aodv_rerr *)dat;
 269         const struct rerr_unreach *dp;
 270
 271         ND_TCHECK(*ap);
 272         if (length < sizeof(*ap))
 273                 goto trunc;
 274         ND_PRINT((ndo, " rerr %s [items %u] [%u]:",
 275             ap->rerr_flags & RERR_NODELETE ? "[D]" : "",
 276             ap->rerr_dc, length));
 277         dp = (const struct rerr_unreach *)(dat + sizeof(*ap));
 278         i = length - sizeof(*ap);
 279         for (dc = ap->rerr_dc; dc != 0; dc--) {
 280                 ND_TCHECK(*dp);
 281                 if (i < sizeof(*dp))
 282                         goto trunc;
 283                 ND_PRINT((ndo, " {%s}(%ld)", ipaddr_string(ndo, &dp->u_da),
 284                     (unsigned long)EXTRACT_32BITS(&dp->u_ds)));
 285                 dp++;
 286                 i -= sizeof(*dp);
 287         }
 288         return;
 289
 290 trunc:
 291         ND_PRINT((ndo, "[|rerr]"));
 292 }
 293
 294 static void
 295 #ifdef INET6
 296 aodv_v6_rreq(netdissect_options *ndo, const u_char *dat, u_int length)
 297 #else
 298 aodv_v6_rreq(netdissect_options *ndo, const u_char *dat _U_, u_int length)
 299 #endif
 300 {
 301 #ifdef INET6
 302         u_int i;
 303         const struct aodv_rreq6 *ap = (const struct aodv_rreq6 *)dat;
 304
 305         ND_TCHECK(*ap);
 306         if (length < sizeof(*ap))
 307                 goto trunc;
 308         ND_PRINT((ndo, " v6 rreq %u %s%s%s%s%shops %u id 0x%08lx\n"
 309             "\tdst %s seq %lu src %s seq %lu", length,
 310             ap->rreq_type & RREQ_JOIN ? "[J]" : "",
 311             ap->rreq_type & RREQ_REPAIR ? "[R]" : "",
 312             ap->rreq_type & RREQ_GRAT ? "[G]" : "",
 313             ap->rreq_type & RREQ_DEST ? "[D]" : "",
 314             ap->rreq_type & RREQ_UNKNOWN ? "[U] " : " ",
 315             ap->rreq_hops,
 316             (unsigned long)EXTRACT_32BITS(&ap->rreq_id),
 317             ip6addr_string(ndo, &ap->rreq_da),
 318             (unsigned long)EXTRACT_32BITS(&ap->rreq_ds),
 319             ip6addr_string(ndo, &ap->rreq_oa),
 320             (unsigned long)EXTRACT_32BITS(&ap->rreq_os)));
 321         i = length - sizeof(*ap);
 322         if (i >= sizeof(struct aodv_ext))
 323                 aodv_extension(ndo, (const struct aodv_ext *)(dat + sizeof(*ap)), i);
 324         return;
 325
 326 trunc:
 327         ND_PRINT((ndo, " [|rreq"));
 328 #else
 329         ND_PRINT((ndo, " v6 rreq %u", length));
 330 #endif
 331 }
 332
 333 static void
 334 #ifdef INET6
 335 aodv_v6_rrep(netdissect_options *ndo, const u_char *dat, u_int length)
 336 #else
 337 aodv_v6_rrep(netdissect_options *ndo, const u_char *dat _U_, u_int length)
 338 #endif
 339 {
 340 #ifdef INET6
 341         u_int i;
 342         const struct aodv_rrep6 *ap = (const struct aodv_rrep6 *)dat;
 343
 344         ND_TCHECK(*ap);
 345         if (length < sizeof(*ap))
 346                 goto trunc;
 347         ND_PRINT((ndo, " rrep %u %s%sprefix %u hops %u\n"
 348            "\tdst %s dseq %lu src %s %lu ms", length,
 349             ap->rrep_type & RREP_REPAIR ? "[R]" : "",
 350             ap->rrep_type & RREP_ACK ? "[A] " : " ",
 351             ap->rrep_ps & RREP_PREFIX_MASK,
 352             ap->rrep_hops,
 353             ip6addr_string(ndo, &ap->rrep_da),
 354             (unsigned long)EXTRACT_32BITS(&ap->rrep_ds),
 355             ip6addr_string(ndo, &ap->rrep_oa),
 356             (unsigned long)EXTRACT_32BITS(&ap->rrep_life)));
 357         i = length - sizeof(*ap);
 358         if (i >= sizeof(struct aodv_ext))
 359                 aodv_extension(ndo, (const struct aodv_ext *)(dat + sizeof(*ap)), i);
 360         return;
 361
 362 trunc:
 363         ND_PRINT((ndo, " [|rreq"));
 364 #else
 365         ND_PRINT((ndo, " rrep %u", length));
 366 #endif
 367 }
 368
 369 static void
 370 #ifdef INET6
 371 aodv_v6_rerr(netdissect_options *ndo, const u_char *dat, u_int length)
 372 #else
 373 aodv_v6_rerr(netdissect_options *ndo, const u_char *dat _U_, u_int length)
 374 #endif
 375 {
 376 #ifdef INET6
 377         u_int i, dc;
 378         const struct aodv_rerr *ap = (const struct aodv_rerr *)dat;
 379         const struct rerr_unreach6 *dp6;
 380
 381         ND_TCHECK(*ap);
 382         if (length < sizeof(*ap))
 383                 goto trunc;
 384         ND_PRINT((ndo, " rerr %s [items %u] [%u]:",
 385             ap->rerr_flags & RERR_NODELETE ? "[D]" : "",
 386             ap->rerr_dc, length));
 387         dp6 = (const struct rerr_unreach6 *)(const void *)(ap + 1);
 388         i = length - sizeof(*ap);
 389         for (dc = ap->rerr_dc; dc != 0; dc--) {
 390                 ND_TCHECK(*dp6);
 391                 if (i < sizeof(*dp6))
 392                         goto trunc;
 393                 ND_PRINT((ndo, " {%s}(%ld)", ip6addr_string(ndo, &dp6->u_da),
 394                     (unsigned long)EXTRACT_32BITS(&dp6->u_ds)));
 395                 dp6++;
 396                 i -= sizeof(*dp6);
 397         }
 398         return;
 399
 400 trunc:
 401         ND_PRINT((ndo, "[|rerr]"));
 402 #else
 403         ND_PRINT((ndo, " rerr %u", length));
 404 #endif
 405 }
 406
 407 static void
 408 #ifdef INET6
 409 aodv_v6_draft_01_rreq(netdissect_options *ndo, const u_char *dat, u_int length)
 410 #else
 411 aodv_v6_draft_01_rreq(netdissect_options *ndo, const u_char *dat _U_, u_int length)
 412 #endif
 413 {
 414 #ifdef INET6
 415         u_int i;
 416         const struct aodv_rreq6_draft_01 *ap = (const struct aodv_rreq6_draft_01 *)dat;
 417
 418         ND_TCHECK(*ap);
 419         if (length < sizeof(*ap))
 420                 goto trunc;
 421         ND_PRINT((ndo, " rreq %u %s%s%s%s%shops %u id 0x%08lx\n"
 422             "\tdst %s seq %lu src %s seq %lu", length,
 423             ap->rreq_type & RREQ_JOIN ? "[J]" : "",
 424             ap->rreq_type & RREQ_REPAIR ? "[R]" : "",
 425             ap->rreq_type & RREQ_GRAT ? "[G]" : "",
 426             ap->rreq_type & RREQ_DEST ? "[D]" : "",
 427             ap->rreq_type & RREQ_UNKNOWN ? "[U] " : " ",
 428             ap->rreq_hops,
 429             (unsigned long)EXTRACT_32BITS(&ap->rreq_id),
 430             ip6addr_string(ndo, &ap->rreq_da),
 431             (unsigned long)EXTRACT_32BITS(&ap->rreq_ds),
 432             ip6addr_string(ndo, &ap->rreq_oa),
 433             (unsigned long)EXTRACT_32BITS(&ap->rreq_os)));
 434         i = length - sizeof(*ap);
 435         if (i >= sizeof(struct aodv_ext))
 436                 aodv_extension(ndo, (const struct aodv_ext *)(dat + sizeof(*ap)), i);
 437         return;
 438
 439 trunc:
 440         ND_PRINT((ndo, " [|rreq"));
 441 #else
 442         ND_PRINT((ndo, " rreq %u", length));
 443 #endif
 444 }
 445
 446 static void
 447 #ifdef INET6
 448 aodv_v6_draft_01_rrep(netdissect_options *ndo, const u_char *dat, u_int length)
 449 #else
 450 aodv_v6_draft_01_rrep(netdissect_options *ndo, const u_char *dat _U_, u_int length)
 451 #endif
 452 {
 453 #ifdef INET6
 454         u_int i;
 455         const struct aodv_rrep6_draft_01 *ap = (const struct aodv_rrep6_draft_01 *)dat;
 456
 457         ND_TCHECK(*ap);
 458         if (length < sizeof(*ap))
 459                 goto trunc;
 460         ND_PRINT((ndo, " rrep %u %s%sprefix %u hops %u\n"
 461            "\tdst %s dseq %lu src %s %lu ms", length,
 462             ap->rrep_type & RREP_REPAIR ? "[R]" : "",
 463             ap->rrep_type & RREP_ACK ? "[A] " : " ",
 464             ap->rrep_ps & RREP_PREFIX_MASK,
 465             ap->rrep_hops,
 466             ip6addr_string(ndo, &ap->rrep_da),
 467             (unsigned long)EXTRACT_32BITS(&ap->rrep_ds),
 468             ip6addr_string(ndo, &ap->rrep_oa),
 469             (unsigned long)EXTRACT_32BITS(&ap->rrep_life)));
 470         i = length - sizeof(*ap);
 471         if (i >= sizeof(struct aodv_ext))
 472                 aodv_extension(ndo, (const struct aodv_ext *)(dat + sizeof(*ap)), i);
 473         return;
 474
 475 trunc:
 476         ND_PRINT((ndo, " [|rreq"));
 477 #else
 478         ND_PRINT((ndo, " rrep %u", length));
 479 #endif
 480 }
 481
 482 static void
 483 #ifdef INET6
 484 aodv_v6_draft_01_rerr(netdissect_options *ndo, const u_char *dat, u_int length)
 485 #else
 486 aodv_v6_draft_01_rerr(netdissect_options *ndo, const u_char *dat _U_, u_int length)
 487 #endif
 488 {
 489 #ifdef INET6
 490         u_int i, dc;
 491         const struct aodv_rerr *ap = (const struct aodv_rerr *)dat;
 492         const struct rerr_unreach6_draft_01 *dp6;
 493
 494         ND_TCHECK(*ap);
 495         if (length < sizeof(*ap))
 496                 goto trunc;
 497         ND_PRINT((ndo, " rerr %s [items %u] [%u]:",
 498             ap->rerr_flags & RERR_NODELETE ? "[D]" : "",
 499             ap->rerr_dc, length));
 500         dp6 = (const struct rerr_unreach6_draft_01 *)(const void *)(ap + 1);
 501         i = length - sizeof(*ap);
 502         for (dc = ap->rerr_dc; dc != 0; dc--) {
 503                 ND_TCHECK(*dp6);
 504                 if (i < sizeof(*dp6))
 505                         goto trunc;
 506                 ND_PRINT((ndo, " {%s}(%ld)", ip6addr_string(ndo, &dp6->u_da),
 507                     (unsigned long)EXTRACT_32BITS(&dp6->u_ds)));
 508                 dp6++;
 509                 i -= sizeof(*dp6);
 510         }
 511         return;
 512
 513 trunc:
 514         ND_PRINT((ndo, "[|rerr]"));
 515 #else
 516         ND_PRINT((ndo, " rerr %u", length));
 517 #endif
 518 }
 519
 520 void
 521 aodv_print(netdissect_options *ndo,
 522            const u_char *dat, u_int length, int is_ip6)
 523 {
 524         uint8_t msg_type;
 525
 526         /*
 527          * The message type is the first byte; make sure we have it
 528          * and then fetch it.
 529          */
 530         ND_TCHECK(*dat);
 531         msg_type = *dat;
 532         ND_PRINT((ndo, " aodv"));
 533
 534         switch (msg_type) {
 535
 536         case AODV_RREQ:
 537                 if (is_ip6)
 538                         aodv_v6_rreq(ndo, dat, length);
 539                 else
 540                         aodv_rreq(ndo, dat, length);
 541                 break;
 542
 543         case AODV_RREP:
 544                 if (is_ip6)
 545                         aodv_v6_rrep(ndo, dat, length);
 546                 else
 547                         aodv_rrep(ndo, dat, length);
 548                 break;
 549
 550         case AODV_RERR:
 551                 if (is_ip6)
 552                         aodv_v6_rerr(ndo, dat, length);
 553                 else
 554                         aodv_rerr(ndo, dat, length);
 555                 break;
 556
 557         case AODV_RREP_ACK:
 558                 ND_PRINT((ndo, " rrep-ack %u", length));
 559                 break;
 560
 561         case AODV_V6_DRAFT_01_RREQ:
 562                 aodv_v6_draft_01_rreq(ndo, dat, length);
 563                 break;
 564
 565         case AODV_V6_DRAFT_01_RREP:
 566                 aodv_v6_draft_01_rrep(ndo, dat, length);
 567                 break;
 568
 569         case AODV_V6_DRAFT_01_RERR:
 570                 aodv_v6_draft_01_rerr(ndo, dat, length);
 571                 break;
 572
 573         case AODV_V6_DRAFT_01_RREP_ACK:
 574                 ND_PRINT((ndo, " rrep-ack %u", length));
 575                 break;
 576
 577         default:
 578                 ND_PRINT((ndo, " type %u %u", msg_type, length));
 579         }
 580         return;
 581
 582 trunc:
 583         ND_PRINT((ndo, " [|aodv]"));
 584 }